Malicious PDF — malware analysis report

Static analysis result for SHA-256 2a814bb667d5915a…

MALICIOUS

PDF

44.4 KB Created: 2020-08-17 15:58:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 733e6607364458ca7a8090acc27d25db SHA-1: 2f4a73deb476858cbb5091f6eeabd20609b7d1fb SHA-256: 2a814bb667d5915a02352fae0511aea895d927dd58bcc8a2e961cff2cb62533a
194 Risk Score

Malware Insights

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

The PDF contains a mass of external links, many pointing to shopify.com, but one critical link redirects to a known malicious domain (ttraff.cc). This suggests a link farm or SEO poisoning tactic to lure users to malicious content. The document body, though heavily obfuscated, contains the same malicious URL, reinforcing the intent to redirect the user. No scripts were extracted, limiting the analysis to the PDF structure and embedded URLs.

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=descriptive+statistics+for+data+analysis+pdf In PDF document text
    • http://files.naturalicatchirhythms.co.uk/uploads/1/3/1/6/131606546/lotemeselorowas.pdfIn PDF document text
    • http://rekoj.reformanortheast.org/uploads/1/3/1/3/131380600/mitesawal.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://cdn.shopify.com/s/files/1/0434/6026/4086/files/bartleby_the_scrivener_trke.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3929/1554/files/zerikemi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8451/3444/files/5263455393.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5951/0425/files/hernia_hiatal_medigraphic.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/pexivopagutufaxusezonav.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/4460/5845/files/fuxizamojufekesus.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0443/1344/4508/files/esame_celi_5.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2190/9662/files/list_of_acids_and_bases_with_formulas.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/6023/8238/files/11903095923.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 2

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

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000610f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x610F 5100 bytes
SHA-256: 01934041bded523bb3635f9e7bb54c8bfa6079f37275dbbbe67b1d00bbbf4008
font_01_sfnt_off00007284.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7284 10784 bytes
SHA-256: 3c86d33d356df20b9d279951e68ae7e2b545b75e417b8c645fa9ca8d34c028d6
font_02_sfnt_off000096b6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x96B6 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f

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