Malicious PDF — malware analysis report

Static analysis result for SHA-256 b94c01eee2a1ab8c…

MALICIOUS

PDF

77.9 KB Created: 2021-03-19 23:18:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-25
MD5: 141496b44388f1ebef15a7076d66e2f8 SHA-1: d8db2ce1c30b862fedb1ab8a79462aef26bad97f SHA-256: b94c01eee2a1ab8c5ecc36f3f1226010d2e3c2a93b33c11d6c225d7b3282e192
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains numerous embedded URLs, many pointing to disposable domains, suggesting a link farm or redirection scheme to deliver malicious content. The presence of external URIs and the PDF_SEO_DISPOSABLE_LINK_FARM heuristic indicate a strong intent to direct users to potentially harmful external sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 5

  • 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 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://jumiwimov.ru/wix?keyword=real+estate+principles+a+value+approach+5th+edition+pdf PDF link annotation
    • http://pumba.fun/how_to_write_a_script_for_movie_productionzkeoo.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4418566/normal_5ff85a0b79e0f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378382/normal_60468b8edf1c6.pdfIn PDF document text
    • http://detonic-de.website/88491213999iqygg.pdfIn PDF document text
    • http://lady-bug.club/39005828827zwrbf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4449779/normal_604ada87cd8b7.pdfIn PDF document text
    • http://uptodate.site/goduxiresafujekalanamei3b81.pdfIn PDF document text
    • http://akvatehnika74.ru/saint_seiya_awakening_hack_apkwsibv.pdfIn PDF document text
    • https://cdn.sqhk.co/reretukida/jGhbjdF/69409078179.pdfIn PDF document text
    • https://cdn.sqhk.co/tinipuded/rEyhiJL/batexig.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4448985/normal_604ceb0f3e1d4.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/c2a2e425-47c8-41ff-b179-b23fb90959f8/how_to_write_jodi_arias_in_prison.pdfIn PDF document text
    • https://8d59741e-369e-44be-b01e-8fbcb09d2d01.filesusr.com/ugd/7cefa9_0fd45f73c3164d6eb5d4cc8bdf16b00d.pdf?index=trueIn PDF document text
    • https://af30af13-e0b7-4de0-aca7-7783c01eade2.filesusr.com/ugd/9757e7_8b1cdc8bcef94c23a7eb61d6ec0fab76.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/fukezavazuj/ben_10_ben_10_telugu.pdfIn PDF document text
    • https://s3.amazonaws.com/pibajuwi/rixeba.pdfIn PDF document text
    • https://737bf953-b780-43bc-8af0-312ed5328a40.filesusr.com/ugd/017c44_bc329a35405e4d6caf1848d7480b8de7.pdf?index=trueIn PDF document text
    • https://cccd2283-d272-450a-840b-6541230ebad2.filesusr.com/ugd/5de1df_cdc2c4cee9d94343a87b8d0a9bf27f5b.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/xuzed/little_fires_everywhere_trailer_espaol.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b666dfd2-6e26-48f5-b045-543fe4e0b934/aliiolani_elementary_school_craft_fair.pdfIn PDF document text
    • https://s3.amazonaws.com/xumakomowi/fofenuwunafivojul.pdfIn 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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e93a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE93A 5432 bytes
SHA-256: 5c6b0ef9f36aec916434e130cb00fb23f77338565b76aafe02d911f041ba74dd
font_01_sfnt_off0000fbb9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFBB9 1944 bytes
SHA-256: df95e079a26d38a5e36065ac3a1faf906c10b473173d1e46ed244158e6db8dab
font_02_sfnt_off00010504.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10504 10672 bytes
SHA-256: c199d571f9b947278f4344083fcdeb56f66d59ce2e523159217a52a2818bbf7d

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