Malicious PDF — malware analysis report

Static analysis result for SHA-256 a412b1680a197188…

MALICIOUS

PDF

46.3 KB Created: 2020-08-19 09:13:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 80d76bb0eab7fd56fe0499299a25dbd5 SHA-1: 25c01f25a9abcbf1568f008d7ec70773e611a6f1 SHA-256: a412b1680a19718883b51464cb4fb503a9da984cafae1196283dab17dabe8d3e
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/pify?keyword=first+grade+reading+worksheets+free+online'. This indicates the document's primary purpose is to redirect users to potentially harmful content. The presence of a PDF link farm heuristic further supports the malicious intent, suggesting an attempt to distribute malicious links or content. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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://ttraff.cc/pify?keyword=first+grade+reading+worksheets+free+online In PDF document text
    • http://files.carvetta.com/uploads/1/3/1/3/131397938/rusopebuwawezirija.pdfIn PDF document text
    • http://files.artistcafeutica.com/uploads/1/3/0/9/130969659/74de3e6.pdfIn PDF document text
    • http://kusumutav.alexlanshe.com/uploads/1/3/2/3/132302870/db7f4c014.pdfIn PDF document text
    • http://files.pacificbrows.co.uk/uploads/1/3/1/1/131164573/ce04e422d.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8184/3356/files/56470360035.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2745/5400/files/majakaj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1537/2949/files/85057313062.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9311/5558/files/10945518252.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0533/0083/files/swagify_all_spam_copy_and_paste.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8638/0189/files/29643336742.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4535/5682/files/30201492388.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3998/0710/files/71273736884.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0464/6404/1118/files/crca_sheet_grade_d.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9693/2505/files/99555025040.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000076d1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x76D1 5280 bytes
SHA-256: 38377cc5d23d9238101da0698770c176aaf28a4c8a9960cf899fb4d71af266a3
font_01_sfnt_off000088d2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x88D2 10368 bytes
SHA-256: d44093e52a7d21f1d9035777f16f98428e2491fea82655ef4415d28114f1c775

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