Malicious PDF — malware analysis report

Static analysis result for SHA-256 2e532182c2daad49…

MALICIOUS

PDF

69.4 KB Created: 2020-12-17 13:16:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 055164211aa74375e002f70645fc93ed SHA-1: ba74a7a6f859385637c2bf0844917db851645a49 SHA-256: 2e532182c2daad492233f45f4f982bad9df60212f0c29ba6c822fac7b5aca7df
214 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to a URL that appears to be a lure. Additionally, it hosts a large number of external PDF links, suggesting a link farm or SEO spamming operation. The ClamAV detection and ML classifier further indicate malicious intent, likely related to phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • 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.
  • 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://gettraff.ru/strik?utm_term=good+charlotte+dance+floor+anthem+chords In PDF document text
    • https://fodolazaso.weebly.com/uploads/1/3/4/8/134891373/suvopavoxafana.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4452595/normal_5fb431ec3475e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380229/normal_5f954957f326f.pdfIn PDF document text
    • https://zoxuzuxebexot.weebly.com/uploads/1/3/0/9/130969059/tidivobinimigip-banez-batipafon.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4424951/normal_5fd8780847594.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/rijaliwiguvex/jajifudamup.pdfIn PDF document text
    • https://s3.amazonaws.com/zirojopemup/87078595411.pdfIn PDF document text
    • https://s3.amazonaws.com/gujutavevive/fast_and_furious_1_full_movie.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e986de2a-9326-4c7e-ac39-78b294ec0c8e/factual_report_teks_animal.pdfIn PDF document text
    • https://s3.amazonaws.com/wupagivoz/24777704148.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/77c32bd8-67d6-46f8-ac51-cdb99c0aab2d/anything_you_can_do_sheet_music.pdfIn PDF document text
    • https://s3.amazonaws.com/legesiliv/28788623610.pdfIn PDF document text
    • https://s3.amazonaws.com/kiwopusafize/genuine_abdul_kareem_egyptian_musk.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_off0000cf57.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCF57 5292 bytes
SHA-256: 1d2d07d3de6feed08ed76180d59720a6554e7427ad656e3f6bcd66a1fc4354d2
font_01_sfnt_off0000e12d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE12D 11752 bytes
SHA-256: 2a1bf7fc8f523f26292fe5cbb67626b1a635be20f1e80e312c4f65043a611077

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