Malicious PDF — malware analysis report

Static analysis result for SHA-256 0a387e932d4f473a…

MALICIOUS

PDF

75.7 KB Created: 2020-12-17 15:34:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 9c5ce704cba946b6f7fb32c8d697db3c SHA-1: d494d0c060ca998645dca1ed52c13e9ec8676a28 SHA-256: 0a387e932d4f473a4c101e3b2295ecdf43fd9f92842cbe19dad3fd1682438c67
254 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by multiple heuristics, including ClamAV and an ML classifier, indicating it likely hosts malicious content. It contains numerous embedded URLs, with at least one pointing to known malicious redirector infrastructure at 'https://traffking.ru/aws?utm_term=bhairava+geetha+movie+songs+free'. The presence of a link farm suggests an attempt to drive traffic to potentially malicious or phishing sites, masquerading as legitimate content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://traffking.ru/aws?utm_term=bhairava+geetha+movie+songs+free In PDF document text
    • https://jakedekokobara.weebly.com/uploads/1/3/1/3/131381480/jolon_koxuzozudanik_makilitinami.pdfIn PDF document text
    • https://gogebuzavoriro.weebly.com/uploads/1/3/2/6/132681212/6675268.pdfIn PDF document text
    • https://josudirojupa.weebly.com/uploads/1/3/4/7/134729494/0d607a0f549db7d.pdfIn PDF document text
    • https://wilunozuwi.weebly.com/uploads/1/3/4/4/134432110/5182771.pdfIn PDF document text
    • https://geziduvugizi.weebly.com/uploads/1/3/4/8/134862990/45ca35b0.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
    • https://static1.squarespace.com/static/5fc67172bdb33045eee820f7/t/5fcdedfc920f47545bb745fe/1607331326611/whole_wheat_sandwich_bread_recipe_vital_wheat_gluten.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbd124e4b66d17947f7375e/1606226510791/76496356270.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc644b6c6d9645836469867/t/5fc79ab60791337046ea5486/1606916791458/98757324537.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc786fa161f8068becefd9d/t/5fcee37fcaa95a391e5ef716/1607394176533/41656986807.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0e3ecc14dfd36fef16b99/t/5fc16bfff81c9a2a0cd7a82b/1606511617339/55326861768.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc69156239b072291587631/t/5fd6ec97ab77727176a3c02d/1607920792704/alaiye_sitralaiye_video_song_free.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0de9c5bcb0228a2825217/t/5fc13f9f61e25426e165e896/1606500257594/big_slick_poker.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0f4078787e879896c419e/t/5fc39551cb3e0f5771be6a8c/1606653269705/world_history_patterns_of_interaction_quizzes.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dcea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDCEA 5048 bytes
SHA-256: 1620d613981800efaa8418eb7fbeca17b1e5984ef6da8e7698c9d07f983b0e34
font_01_sfnt_off0000edf6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEDF6 11452 bytes
SHA-256: 7e4469cde0f23ad3c072f56a649c03a78fd9eb582814fbd3dc7fb7e8e425ac37
font_02_sfnt_off000113e8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x113E8 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176