Malicious PDF — malware analysis report

Static analysis result for SHA-256 d8ec174c6ca65c25…

MALICIOUS

PDF

78.0 KB Created: 2021-03-20 04:14:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-10
MD5: b24a91812380a9a700db20f6e7ed14b6 SHA-1: 5c6462a9413c1c1ff5c89214375d0c1d427f2608 SHA-256: d8ec174c6ca65c2590edcfc58cddd6689794112bd300c9705511ff97cf54a4d0
186 Risk Score

Malware Insights

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

This PDF document functions as a link farm, directing users to various external URLs, one of which is associated with "Grand Theft Auto 111 mod apk". The PDF contains a large number of external links, many hosted on disposable domains, indicating a phishing or malware distribution attempt. ClamAV and ML classifiers also flagged this file as malicious, specifically as a phishing trojan.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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
  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://lozipotod.ru/wix?keyword=grand+theft+auto+111+mod+apk PDF link annotation
    • https://midejunefe.weebly.com/uploads/1/3/5/4/135400465/lelosuxulinibumuti.pdfIn PDF document text
    • https://xuberirerumona.weebly.com/uploads/1/3/4/5/134586272/48143.pdfIn PDF document text
    • http://kasumunanivux.iblogger.org/android_x86_64_stuck.pdfIn PDF document text
    • http://simupujumojata.22web.org/adventure_quest_warrior_guide_2018.pdfIn PDF document text
    • http://gafuvufafokujop.sportsontheweb.net/cannes_france_map.pdfIn PDF document text
    • https://batusapetedovug.weebly.com/uploads/1/3/0/8/130873971/80db3ce0beeeb2.pdfIn PDF document text
    • http://jetinaxisodew.mypressonline.com/36788221756.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446155/normal_601fa95a30d2d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4490129/normal_600aefcdd8afb.pdfIn PDF document text
    • http://mefazezotaw.22web.org/44232183772.pdfIn PDF document text
    • http://negifowutagur.mygamesonline.org/28272576755.pdfIn PDF document text
    • http://rubewox.sportsontheweb.net/annie_dillard_total_eclipse_audio.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fikupamipevow.rf.gd/xepelaresibajifujanisa.pdfIn PDF document text
    • https://13ea8442-998f-4f14-ba3b-7f37e53a414c.filesusr.com/ugd/008a9f_577dd8b7650f464a894d846da562ed71.pdf?index=trueIn PDF document text
    • https://d3826037-6016-486c-99e9-dc41bc666644.filesusr.com/ugd/b81754_e97d87afb9b64473bac9d4fb56f86684.pdf?index=trueIn PDF document text
    • https://a95edb9d-21e5-46e4-bb1b-b1fdf66a5dae.filesusr.com/ugd/09e34a_0bf7df4db06f40a18049401ba3b9a424.pdf?index=trueIn PDF document text
    • http://zojopek.epizy.com/afcat_question_paper_2015.pdfIn PDF document text
    • https://70745723-7f4a-4dc7-98be-95bdce43cd82.filesusr.com/ugd/67bae7_09dcf2dc5eeb4ada9ae9394c977c0355.pdf?index=trueIn PDF document text
    • http://rowoniwetob.atwebpages.com/bearing_nomenclature_skf.pdfIn PDF document text
    • https://8fc1c2d6-49ba-4d63-8b95-0327ef2b1627.filesusr.com/ugd/1849a1_8ad9e7788b4841f3a5f526a1a74d3cbd.pdf?index=trueIn PDF document text
    • https://f1801c53-b3f5-4b94-a9b3-4bb8eb376a66.filesusr.com/ugd/af633f_19f9371f317248389c08bd722e2540a0.pdf?index=trueIn PDF document text
    • https://36c7e617-1221-4173-b726-d5bce2878801.filesusr.com/ugd/610d21_80e798fe605641b4a9afe4abc86cf763.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f344.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF344 5216 bytes
SHA-256: 887ccceea6d61a3802c9cb7a0275286355fec19a34a8d174a39b640823ea16da
font_01_sfnt_off000104e2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x104E2 11160 bytes
SHA-256: adf89cbbf13c3b3a6c31c943a620c20e534dc6c3742d65949b21e198cf19166a