Malicious PDF — malware analysis report

Static analysis result for SHA-256 62c75a390bbe2573…

MALICIOUS

PDF

66.0 KB Created: 2020-12-22 03:55:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 1c20a276979c60c52dd7174b2a07b027 SHA-1: 053233d73e14bb24d2e67951626fece19381d787 SHA-256: 62c75a390bbe25738d24ab714df39a210cbca145aad857ae9e04001349a3f3ba
156 Risk Score
Tags
free-cdn-ebook-manual-lure

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 'PDF_SEO_LINK_FARM' heuristic. The primary URL, 'https://trafficel.ru/strik?utm_term=eggbot+vs+zombies+unblocked', suggests a potential phishing or malicious redirection attempt. ClamAV also detected this file as 'Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0', reinforcing the malicious classification.

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://trafficel.ru/strik?utm_term=eggbot+vs+zombies+unblocked PDF link annotation
    • https://papunagaku.weebly.com/uploads/1/3/1/3/131384156/pesikurujaxenur_zejawigazipe_desesajekezima.pdfIn PDF document text
    • https://megogira.weebly.com/uploads/1/3/4/5/134590171/853786c74ad5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379362/normal_5f8d3b3451f2e.pdfIn PDF document text
    • https://zisaneviz.weebly.com/uploads/1/3/4/3/134319132/7aef6c57f2cc62.pdfIn PDF document text
    • https://xebikazogede.weebly.com/uploads/1/3/2/7/132740990/raxefiko-winukiwoxuvi-bigaga-jepininuvasono.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375891/normal_5fb25df48cbb3.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4378831/normal_5fc6134619090.pdfIn PDF document text
    • https://talasawag.weebly.com/uploads/1/3/4/2/134265385/8640159.pdfIn PDF document text
    • https://fupebabo.weebly.com/uploads/1/3/4/6/134601971/2a25648.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static1.squarespace.com/static/5fdcb84616306c7603b6accb/t/5fdceca8b62a5d364f6a34e5/1608314024653/zoxemejikuwibofisugovif.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbfd2c30b6b03258f2f7c3b/t/5fc7d9282b4aac18447839b7/1606932776242/56706465160.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fdfe8fd743d4425cca11570/t/5fe09b79fb7de13a648dbd2d/1608555385742/71264183043.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fdfdbf19d00c472c28c2758/t/5fe0154a42c0045a332426e4/1608521035201/all_khasi_video_song.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c5dc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC5DC 5224 bytes
SHA-256: 8b8a080377ac1dca4a8ebe3cbbb33c2707a4c68b25e8996cc120c29d9f4273fb
font_01_sfnt_off0000d7b0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD7B0 10464 bytes
SHA-256: 6f95c3de6048aca11cf7a9682947f1bf7aa602cd1625f927c18717a8a217793c

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