Malicious PDF — malware analysis report

Static analysis result for SHA-256 64a0630582e91996…

MALICIOUS

PDF

67.2 KB Created: 2020-11-10 09:46:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2022-06-20
MD5: d6ceb9968f8ba1aba6eee1217020227d SHA-1: da4b7c705c76e17b88df10e36d38066d0bcf0f67 SHA-256: 64a0630582e919963849e5d9b5f378bfc3a0f3dcc52a13833e19300a55500181
254 Risk Score

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?keyword=loan+amortization+schedule+excel+2016 In PDF document text
    • https://xironudobavus.weebly.com/uploads/1/3/4/4/134461104/pexazukisikuge_nibapijanuj_bidomu_feweludisop.pdfIn PDF document text
    • https://lubozukutiximik.weebly.com/uploads/1/3/4/4/134472848/8249c4af91.pdfIn PDF document text
    • https://zulatikuwa.weebly.com/uploads/1/3/0/7/130776211/8853440.pdfIn PDF document text
    • https://tovozilulu.weebly.com/uploads/1/3/0/8/130873983/tasixonefexumer_kozeged_lomutupu_tozaduro.pdfIn PDF document text
    • https://diveziriluro.weebly.com/uploads/1/3/4/4/134447321/rikem.pdfIn PDF document text
    • https://kukapurabu.weebly.com/uploads/1/3/4/3/134375365/girabepeloz.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/felasorarabipis/74101631488.pdfIn PDF document text
    • https://s3.amazonaws.com/vabedafozo/76283461140.pdfIn PDF document text
    • https://s3.amazonaws.com/fasanag/31044638373.pdfIn PDF document text
    • https://s3.amazonaws.com/nonabafat/adderall_and_viagra_combination.pdfIn PDF document text
    • https://s3.amazonaws.com/zagapaxa/minecraft_13.1_apk.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d9f86820-01ec-48e2-a0a0-d4e06ff6363a/fairy_tail_episode_156_english_dubbed.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_off0000c7c8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC7C8 5720 bytes
SHA-256: 12dfcc4c63523f9b466898b81979c19c08eb0533eb9df92208ef0a135d24ca32
font_01_sfnt_off0000db25.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB25 10812 bytes
SHA-256: bf042965bd68541f282d3ba7408d9f5f6f8d021fd9f3113d0274d79be9ea068b

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