Malicious PDF — malware analysis report

Static analysis result for SHA-256 730a9203967868e5…

MALICIOUS

PDF

80.5 KB Created: 2021-03-19 06:39:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ee0f3dbca94a9146e16972a7648c45fd SHA-1: 770a3650c7f708ee0ce322a081408edd9ce7bc4c SHA-256: 730a9203967868e53472a91126131da641657a5a2a84025b99fd9a134cd3ddea
156 Risk Score

Malware Insights

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

This PDF file was identified as malicious by multiple heuristics and an ML classifier, with ClamAV detecting it as a phishing trojan. The document contains a large number of external links, many pointing to Weebly-hosted PDFs, suggesting a link farm or SEO spam operation. The embedded URLs and the PDF structure indicate an attempt to redirect users to potentially malicious content, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 5

  • 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.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://kuzutuzo.ru/wix?keyword=francis+frangipane+pdf+books
    • https://rebadezoj.weebly.com/uploads/1/3/6/0/136027304/1414528.pdf
    • https://gisogademumes.weebly.com/uploads/1/3/1/3/131379615/187a514bf.pdf
    • https://zeraxoxuret.weebly.com/uploads/1/3/4/6/134642117/naxovuxepenowa-podomurisa-wekozif.pdf
    • https://sikufotoxatufik.weebly.com/uploads/1/3/4/4/134458503/jebazugajunupom-davelefaf-tuforufopogeza.pdf
    • https://wolunogejafijut.weebly.com/uploads/1/3/4/6/134649672/pufikagesi_wabazinexefo_sokoxun.pdf
    • https://sefatepasegul.weebly.com/uploads/1/3/0/7/130775173/benuw.pdf
    • https://zomubotedop.weebly.com/uploads/1/3/0/8/130873922/efe3f73f558a9.pdf
    • https://gimoxawoja.weebly.com/uploads/1/3/1/3/131380550/636908.pdf
    • https://lizuxafemow.weebly.com/uploads/1/3/0/7/130776517/gusunelejoluk.pdf
    • https://votamonaf.weebly.com/uploads/1/3/1/4/131452952/b0ddf08df073.pdf
    • http://watercart.ru/pesatogesado7f354.pdf
    • http://theharaka.online/tizenogoleguzopigarutd0emi.pdf
    • https://badivesexofo.weebly.com/uploads/1/3/1/8/131856590/4ac9dceaa4240d7.pdf
    • https://depumubawaminuk.weebly.com/uploads/1/3/4/2/134236244/57d94c2cdfe.pdf
    • https://fogufufizanalu.weebly.com/uploads/1/3/0/8/130813948/pagagara-wididenopar.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://7c5e2310-e79b-429e-9f4a-70471a43dcce.filesusr.com/ugd/8ec1ef_ef78cdcc0066409f912e63a183e407a3.pdf?index=true
    • https://s3.amazonaws.com/rimepusox/aadhaar_ing_password.pdf
    • https://eed7fa7e-4f31-4ba6-8269-e73f07ac74c5.filesusr.com/ugd/93374d_cb478ef862ad49d59c6781c292ea96e6.pdf?index=true
    • https://s3.amazonaws.com/fotepopunaj/dragon_age_origins_mods_install.pdf
    • https://47a25507-5c4f-4e73-9b7c-0c49514c8174.filesusr.com/ugd/e00bd3_073529ed91f0460a90e5e55ce32a8ecb.pdf?index=true
    • https://441768bb-9839-4df4-8f78-dd1233b527f6.filesusr.com/ugd/7e6080_a39ac252ade447ea8dfa0c46ee3d2a43.pdf?index=true
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f16e.bin
04111242dde5a4b02d9dcaf378133732fbf540f5d15a8ef0d98e2c21d57dd397		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF16E 5156 bytes
font_01_sfnt_off000102f5.bin
fd03e3f3741f7904beac03d025f066f7c90790894841abf8783e854ee2ad7155		 pdf-font-stream PDF embedded font (sfnt) at offset 0x102F5 10436 bytes
font_02_sfnt_off000126c7.bin
0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333		 pdf-font-stream PDF embedded font (sfnt) at offset 0x126C7 4324 bytes

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