Malicious PDF — malware analysis report

Static analysis result for SHA-256 a0b884996bacfd61…

MALICIOUS

PDF

43.3 KB Created: 2020-08-07 21:11:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: cf5d8507c0f7259474c21455d9461df0 SHA-1: 5a02feaf0fdc8ee0f9027874675a202b58fd6bfe SHA-256: a0b884996bacfd616cf4036b499a6217796073c8e1a97f643f34f6f0621097e9
194 Risk Score

Malware Insights

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

The PDF contains numerous links, many pointing to what appears to be a link farm designed for SEO manipulation, ultimately redirecting to malicious infrastructure. The primary redirector URL is https://ttraff.com/pify?keyword=probability+mass+function+problems+pdf, which is flagged as malicious. This suggests the document is part of a phishing or scam campaign aiming to drive traffic to malicious sites.

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.com/pify?keyword=probability+mass+function+problems+pdf In PDF document text
    • http://files.newlifepentecostals.net/uploads/1/3/1/3/131380485/xekopijowuvabawoxezu.pdfIn PDF document text
    • http://files.dancetemplesaltspring.com/uploads/1/3/0/7/130775018/925a021cd.pdfIn PDF document text
    • http://wowef.hidingfromjapaneseghosts.com/uploads/1/3/1/6/131637254/nolena.pdfIn PDF document text
    • http://labifar.montanaarabianhorses.com/uploads/1/3/0/7/130776542/790b04.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/1/0431/5434/2042/files/expiration_date_script.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5255/4657/files/gofajuxi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6223/1201/files/suzifig.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4853/3144/files/1001_arabian_nights_in_bengali_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2193/3466/files/lulemegujezasujelatigepod.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7540/3929/files/porulafesudugasusup.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1313/4757/files/vodefasat.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6396/7906/files/46623614843.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6980/9564/files/jugojakuj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3885/8650/files/67650492823.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0885/2117/files/95228194939.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0415/8375/files/21460081967.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4112/8601/files/learn_excel_macros.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 6

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_off000064a4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x64A4 5544 bytes
SHA-256: fbd45b182fc34ec0a3914e42c82416b0b2719f3d33ed53d209eced260cd832da
font_01_sfnt_off0000776c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x776C 12728 bytes
SHA-256: ddc8937f9bbf0e4d84e9383d195679b12918d88ea7b4e111ce1886a050d9d9cf

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