Malicious PDF — malware analysis report

Static analysis result for SHA-256 85dba0501fa4d233…

MALICIOUS

PDF

43.2 KB Created: 2020-08-03 22:38:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 7998f29b5f060aed23a649cf94e59028 SHA-1: 6463628ea2724da6e026f95c80a4551200321108 SHA-256: 85dba0501fa4d233d3ffb314b10e3099fa5bc79032f868cbb2fa3e1bf36bbaf7
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains a link farm designed to redirect users to malicious infrastructure. The primary redirector URL is https://ttraff.ru/pify?keyword=boosting+self+esteem+pdf, which is flagged as malicious. The document body, though heavily obfuscated, also contains this URL, suggesting an attempt to lure users into clicking it for a supposed 'free download'. No scripts were extracted, but the presence of numerous external links points to a phishing or scam campaign.

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.ru/pify?keyword=boosting+self+esteem+pdf In PDF document text
    • http://files.brightyellowministries.com/uploads/1/3/0/9/130969573/1564683.pdfIn PDF document text
    • http://files.eugenesoundproofing.com/uploads/1/3/2/3/132302960/bejaguni-mogamuvodewefe.pdfIn PDF document text
    • http://files.bioenergeticsberlin.com/uploads/1/3/1/6/131636689/9171571.pdfIn PDF document text
    • http://files.zatoluxury.com/uploads/1/3/0/9/130969545/nefojubig-bibobaxugesu-josajomuju-tuvaregexiwe.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/1/0437/2506/2298/files/giwejoxuxodulizoxupiva.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/lavijado.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3018/4098/files/94653240165.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5582/5567/files/24251133208.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2583/3884/files/71468869364.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/4533/6726/files/2331024105.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1425/0919/files/99482441994.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2408/9242/files/xofefupuzusasabavuze.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9109/0844/files/80131363908.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5554/6517/files/52512098915.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/3780/0086/files/kafik.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2753/6799/files/xenudunonagi.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 5

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_off00006cb1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6CB1 5104 bytes
SHA-256: 54910e08ed5a6f2a41ec23d7c86fc567963702dea2a103cb9d15739134941f60
font_01_sfnt_off00007e0a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7E0A 9976 bytes
SHA-256: 12a4dcca318e9f720e6345bc4b794eee0a183e8f855b7de0a54a2f87c8649304

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