Malicious PDF — malware analysis report

Static analysis result for SHA-256 b242ef0d91cdbc83…

MALICIOUS

PDF

89.3 KB Created: 2021-03-08 06:08:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-22
MD5: 6e54f4821d8e329ef1158a00432aa090 SHA-1: df8cbf478c16bfa36abf4880a9f2feaa6d69602e SHA-256: b242ef0d91cdbc83bc5f1b9edbfa7e84a0c7b27d1f9c8abaf848a423e04bf345
244 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file contains numerous links to external websites, many of which are hosted on disposable domains and appear to be part of a link farm designed to attract traffic. One critical heuristic identified a link to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains text related to 'cheat codes', suggesting a lure for users interested in gaming, which is then used to redirect them to potentially malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9983

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://yafferge.ru/wix?keyword=idle+apocalypse+cheat+codes+list In PDF document text
    • https://paweweribawu.weebly.com/uploads/1/3/4/6/134656346/adf924325e.pdfIn PDF document text
    • https://tujozidu.weebly.com/uploads/1/3/4/6/134694944/7155812.pdfIn PDF document text
    • https://vuzazaba.weebly.com/uploads/1/3/0/8/130813658/3ac53b97d8.pdfIn PDF document text
    • https://bekajujoxofutit.weebly.com/uploads/1/3/1/4/131406668/373ecc3b50169.pdfIn PDF document text
    • https://wipukanutunuk.weebly.com/uploads/1/3/1/4/131437017/5509490.pdfIn PDF document text
    • http://fodamibokaf.66ghz.com/nipasilomejaleto.pdfIn PDF document text
    • https://bijuxoku.weebly.com/uploads/1/3/4/9/134901677/2f16a1e6.pdfIn PDF document text
    • https://nevedaroxizewav.weebly.com/uploads/1/3/4/5/134592578/teripis_numisudavaz_rudodiwilil.pdfIn PDF document text
    • https://defasoxajex.weebly.com/uploads/1/3/1/4/131405962/guvarifilaji_mokitizexel_zaxidonireza_kikefiwewubi.pdfIn PDF document text
    • https://namovanuzo.weebly.com/uploads/1/3/1/6/131606642/a75ab9.pdfIn PDF document text
    • https://gotugutulado.weebly.com/uploads/1/3/4/6/134648793/4d4139ee1c5a.pdfIn PDF document text
    • http://tujugebisuxilun.22web.org/70286749316.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://tefabonapo.rf.gd/61906789028.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b2bb608f-2995-46e9-98e4-fcca200c15c3/how_to_produce_music_for_beginners_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/143ea442-ef30-43e0-ac89-e47d158cd242/first_alert_9120b_instructions.pdfIn PDF document text
    • http://wuwedilejom.myartsonline.com/does_peavey_still_made_in_the_usa.pdfIn PDF document text
    • https://5e0c4d4d-41f9-428c-9564-b93e7cff6769.filesusr.com/ugd/510691_7284680e3c474ef0935494e4159eff52.pdf?index=trueIn PDF document text
    • http://kuzezoma.epizy.com/82118760636.pdfIn PDF document text
    • https://c2dbac7f-2075-4dc1-ad03-af0d0352bff2.filesusr.com/ugd/278743_fcb041fd2cbb4a9681cdab5e27b39b64.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/0fa7f4f7-f730-4c54-9726-95213043b1dc/62457680849.pdfIn PDF document text
    • http://rigidafavubo.myartsonline.com/duralast_700_peak_amp_jump_starter_manual.pdfIn PDF document text
    • https://d78d2789-9aef-4bfd-88be-9093bec910ef.filesusr.com/ugd/87a178_88b564ffa4f54c798d38d040c2e26524.pdf?index=trueIn PDF document text
    • https://d21da297-2d1c-4020-882f-059d99c29dc9.filesusr.com/ugd/3724a2_9c53f729e722477c8a05d0b03147e9fd.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/0d8e752e-9d0d-4122-8583-cc8826febfe2/how_to_mute_frigidaire_microwave_ffmv164lsa.pdfIn PDF document text
    • https://8d67285a-e3c5-4820-bb1a-bb91ce1079a6.filesusr.com/ugd/d54300_6e3ee35560ee4ebca9e3b7c07f443bab.pdf?index=trueIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fe98.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE98 4784 bytes
SHA-256: fa6659f307058fdb1ba20426082c35ffa6eb8de75ba7f6f0735fc52b8b86a712
font_01_sfnt_off00010eee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10EEE 10872 bytes
SHA-256: 0ebe50d4532f21975a87048e447c45dae5f49bb3e43933bd3e23d5747e66a26b
font_02_sfnt_off00013443.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13443 16060 bytes
SHA-256: d78d7cc1a68daa951b4fbccbcfb906d5a08ad384f187125596154666a45abe72
font_03_sfnt_off000148d8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x148D8 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e

Open this report in the interactive analyzer, or submit your own file for analysis.