Malicious PDF — malware analysis report

Static analysis result for SHA-256 2be14d0b2760e78c…

MALICIOUS

PDF

74.2 KB Created: 2021-02-21 14:50:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: c9e3aeeaa0a6c33a63abb34d78dac955 SHA-1: ea29b6e073090a3791b500818f69e151f0117504 SHA-256: 2be14d0b2760e78c3465114923b8400d75d5ac23d2bea25d8380821969cce6ad
156 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that mimics a search engine result for 'iss rei va drivers license', directing users to a suspicious domain. Additionally, it includes a large number of external links, many pointing to PDFs hosted on S3, suggesting a link farm or SEO manipulation tactic. The ClamAV detection and ML classifier strongly indicate malicious intent, likely related to phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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 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.
  • 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://leonvi.ru/wix?keyword=iss+rei+va+drivers+license PDF link annotation
    • https://mudufisapegew.weebly.com/uploads/1/3/6/0/136097401/xudaxuzowuvo.pdfIn PDF document text
    • https://punoburewi.weebly.com/uploads/1/3/4/3/134305970/levimapar_nelujowipuj_desuji.pdfIn PDF document text
    • https://durirumis.weebly.com/uploads/1/3/3/9/133999752/vidow.pdfIn PDF document text
    • https://kunimagim.weebly.com/uploads/1/3/4/6/134608209/lalivewe-pelabe-pipopoxiwegupos-norujidujubut.pdfIn PDF document text
    • https://suzeziji.weebly.com/uploads/1/3/0/7/130739492/d8d12b2f848.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/papuja/sawigef.pdfIn PDF document text
    • https://s3.amazonaws.com/ditiruz/2114316913.pdfIn PDF document text
    • https://s3.amazonaws.com/vekodupiwarobi/nice_black_wallpaper_for_android.pdfIn PDF document text
    • https://s3.amazonaws.com/gowupuzokowuxes/blank_multiplication_table_worksheet_1-_10.pdfIn PDF document text
    • https://s3.amazonaws.com/guwutivupudutu/vewemupafuza.pdfIn PDF document text
    • https://s3.amazonaws.com/levovod/bonitasoft_tutorial.pdfIn PDF document text
    • https://s3.amazonaws.com/lanaladu/bboy_funk_music.pdfIn PDF document text
    • https://s3.amazonaws.com/nefunupu/yakuza_kiwami_pocket_circuit_race_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/kijelopazekune/42403909900.pdfIn PDF document text
    • https://s3.amazonaws.com/gavobawum/whats_the_fastest_combine_40_time.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d30d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD30D 4928 bytes
SHA-256: d99d9da50ae34162c5b1cfb655f41e6f830d0a3148d3881bf64ec011646f7985
font_01_sfnt_off0000e3e5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE3E5 10172 bytes
SHA-256: 1c6c6ed1da377d4f2bc8121947b0c2fa2b77f7ce1f36555bd61fe41e8c37663c
font_02_sfnt_off000106ee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x106EE 16164 bytes
SHA-256: ead7fd593d7f5feef6f283420e9b55f8fa4552f107c64b0063d474dd3355abd8

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