Malicious PDF — malware analysis report

Static analysis result for SHA-256 31c26ddc70e21bfd…

MALICIOUS

PDF

53.9 KB Created: 2020-08-09 03:44:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 6b2c8961c62904f92875d6b421af0a33 SHA-1: 54cd3d56b464dd25bc234db97515b0ab6fac3fcb SHA-256: 31c26ddc70e21bfd9bec5a8454df2bd2599c5fe4423eea8ae0c517ea4d664111
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to `https://ttraff.cc/pify?keyword=assembler+tutorial+deutsch+pdf`. This indicates the document's primary purpose is to redirect users to malicious infrastructure. The PDF also contains a mass external PDF link farm, with many links pointing to `cdn.shopify.com` and other domains, suggesting a broader campaign to distribute malicious 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=assembler+tutorial+deutsch+pdf In PDF document text
    • http://files.sherylkaz.com/uploads/1/3/2/6/132682929/rajozepofuvo.pdfIn PDF document text
    • http://kufanexaz.addisonwilhite.com/uploads/1/3/0/8/130874253/raroxozimatu.pdfIn PDF document text
    • http://files.hollywaightdesigns.com/uploads/1/3/1/4/131407102/2689650.pdfIn PDF document text
    • http://files.motivationalmowing.com/uploads/1/3/0/9/130969851/wodinisepopada.pdfIn PDF document text
    • http://files.minimalistboutiqueskincare.com/uploads/1/3/1/3/131383959/xexanam_nanawito_xuzejogetexe_gebekoboxufa.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/1/0430/2379/4337/files/xugofosikapivow.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8699/4855/files/rmv-_1_form.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6332/8411/files/11704730315.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5172/9574/files/red_text_discord.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5523/4710/files/59622264108.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6108/3288/files/nuzoz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4253/5589/files/livros_sobre_pesquisa_bibliogrfica.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8016/3232/files/fusionner_2_pages.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8096/5534/files/pekiperafatiwowod.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_off00008d0c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8D0C 5524 bytes
SHA-256: af55c09d933243a0d994e149c7c1f797c6ccc730d59669d1c184133e6cfd96c2
font_01_sfnt_off00009fa3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9FA3 13584 bytes
SHA-256: e548df5e5d9b7b1d80c3d1aae61457e1677eca2c5e9a8888ded76ff15d8eae1a

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