Malicious PDF — malware analysis report

Static analysis result for SHA-256 23068f101417dab5…

MALICIOUS

PDF

85.3 KB Created: 2021-05-09 12:53:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 7ae4cb957e6a8b7e56b29a4bcd2cc407 SHA-1: 13b46c20118afd1ff449887e7833a0ea1d64a449 SHA-256: 23068f101417dab5954ed7b386f69b1d42e0a01076199f0809e56fe6aaf94036
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://mezovuduw.ru/strik?utm_term=kiinde+heating+instructions PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4383149/normal_6046f203e36d6.pdfIn PDF document text
    • http://ericksandoval.com/comptine_d_un_autre_ete_paroles77ulf.pdfIn PDF document text
    • http://sun-italy.space/604357123811suqk.pdfIn PDF document text
    • https://nudegono.weebly.com/uploads/1/3/4/6/134682657/d429369a99.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4382423/normal_5ffa588a6a3f1.pdfIn PDF document text
    • https://ragurukenawuxif.weebly.com/uploads/1/3/4/6/134667210/3925988.pdfIn PDF document text
    • http://profoto22.ru/297452263203hv94.pdfIn PDF document text
    • https://femezusuf.weebly.com/uploads/1/3/1/6/131606597/reveb-lidowunafuziv-foxun-judipemewodez.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://ef9d90ca-5811-4a1c-810e-75bcfae60121.filesusr.com/ugd/a33af7_a81a827cb1d647bbbcc1558fecbf30b8.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/fedojigudaj/sefesepet.pdfIn PDF document text
    • https://s3.amazonaws.com/xoguwavosuje/fumopogupudutedivitapan.pdfIn PDF document text
    • https://3a0d5408-2ea1-4258-8d29-5d96341cad2c.filesusr.com/ugd/79cb75_ee67f5a46e6b4a7086246ae845412579.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/xulikamul/how_to_setup_samsung_soundbar_q70r.pdfIn PDF document text
    • https://s3.amazonaws.com/wavunot/le_petit_nicolas_summary_chapter_8.pdfIn PDF document text
    • https://s3.amazonaws.com/bulozor/chiari_malformation_decompression_surgery_video.pdfIn PDF document text
    • https://1f53f175-067f-4140-b001-f66bebc9855b.filesusr.com/ugd/c711d8_3c9dfd3daa40403abec980a1377ff1a2.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/muvemasoxaji/nofekukisaxasekukelebizid.pdfIn PDF document text
    • https://s3.amazonaws.com/wulotugadag/what_are_several_uses_for_transition_metals.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_off0001109f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1109F 5136 bytes
SHA-256: 58b31758f92ea977669074caa6457ca8b4a2b2109d4285ffdb35b2ee0594c508
font_01_sfnt_off0001221a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1221A 11012 bytes
SHA-256: a8910f4d904d41a36ffce099991635a9cc4fb5440818fc7f493224b6ab0b0b5b

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