Malicious PDF — malware analysis report

Static analysis result for SHA-256 49a1b58f27f0a4bd…

MALICIOUS

PDF

76.1 KB Created: 2021-02-17 14:53:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 29ab46799ff7e0d9f351a7764e072c9d SHA-1: e060dcd3229d8b47b992fcbd0371aa16c9ff1fc5 SHA-256: 49a1b58f27f0a4bd1946306b412da2c66a2f06f40a56e6afb6ea14e95e961d26
156 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, identified as a link farm, suggesting a phishing or SEO manipulation tactic. ClamAV detected this as Pdf.Phishing.Trojan, and ML classifiers also flagged it as malicious. The embedded URLs likely lead to further malicious content or phishing pages.

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 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://druttle.ru/wix?keyword=chapter+9+solutions+accounting+principles PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4468270/normal_5ff0020fd6446.pdfIn PDF document text
    • https://relodigiluburem.weebly.com/uploads/1/3/2/6/132681887/5204229.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4421934/normal_5fe2470c35026.pdfIn PDF document text
    • https://kazofinuso.weebly.com/uploads/1/3/4/3/134369681/2095052.pdfIn PDF document text
    • https://lagukowimewalis.weebly.com/uploads/1/3/5/3/135335318/jatobawiliwi.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4387565/normal_5fed9bb3a1134.pdfIn PDF document text
    • https://wonakusoxenim.weebly.com/uploads/1/3/5/3/135340368/f6656704.pdfIn PDF document text
    • https://popagupo.weebly.com/uploads/1/3/1/4/131407300/e8f873.pdfIn PDF document text
    • https://pupowoxixibigi.weebly.com/uploads/1/3/1/4/131438439/namizu-kaxasujim.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4392193/normal_5ff0752ceb482.pdfIn PDF document text
    • https://gapuromediwav.weebly.com/uploads/1/3/0/8/130814643/853099.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4385612/normal_5ffb18dd7d4bf.pdfIn PDF document text
    • https://raxokada.weebly.com/uploads/1/3/1/4/131409035/guzipiru_dazip_mozatujoxekez_bedegezer.pdfIn PDF document text
    • https://cdn.sqhk.co/golemejexeno/ijpigeG/huntington_by_the_sea_mobile_estates.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450641/normal_601d7fd1c1373.pdfIn PDF document text
    • https://cdn.sqhk.co/fuwasokeg/srhiied/1906849397.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4473322/normal_601eecd3a29e9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4412195/normal_5fd7eef9daf1f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4492600/normal_5fcc711679d8f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4445320/normal_5fe8d3424b646.pdfIn PDF document text
    • https://cdn.sqhk.co/rosojolude/RgcxZib/jamarawej.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://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_off0000dfbf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDFBF 5256 bytes
SHA-256: fcb88e38d81b814b864e958fbbc8a055a0216fd6d69df5bf9b7d381765d0f8a6
font_01_sfnt_off0000f19c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF19C 10256 bytes
SHA-256: 4d0541b82bbfcc3ea3f4ea5cf9492ef047e38d94fefc947491b18d39858dcfd0
font_02_sfnt_off0001149f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1149F 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2

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