Malicious PDF — malware analysis report

Static analysis result for SHA-256 86fbc8a2e0a244e3…

MALICIOUS

PDF

44.1 KB Created: 2020-08-24 17:30:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 0c40ca66c319b89c3504b5b897f401a6 SHA-1: 821bee7de62dde02029eb819f7023e7c817d3966 SHA-256: 86fbc8a2e0a244e36cc62afef7fba0a9bdf507a995a70ab8bc47838e3f7dc282
194 Risk Score

Malware Insights

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

The PDF document contains numerous links, including one pointing to a known malicious redirector at `https://ttraff.ru/pify?keyword=cholesterol+screening+guidelines+2019`. This redirector likely leads to a phishing or malware download site. The document body, though heavily obfuscated, contains references to the redirector URL and other URLs hosted on Shopify, suggesting an attempt to disguise malicious activity within a seemingly legitimate context. The presence of a link farm and redirector indicates a likely phishing or content-luring attack.

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=cholesterol+screening+guidelines+2019 In PDF document text
    • http://files.zekveldgardenmarket.ca/uploads/1/3/1/4/131483488/350645.pdfIn PDF document text
    • http://files.diguptheyard.com/uploads/1/3/1/6/131636984/sudimevipad_nifad.pdfIn PDF document text
    • http://files.heartofcoloradofiberartsguild.org/uploads/1/3/1/3/131381605/woxopexos-vifen.pdfIn PDF document text
    • http://zapolikux.paragliding-korea.com/uploads/1/3/1/3/131398091/0b6233.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/1/0432/8911/6840/files/990904896.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4916/4698/files/11123408927.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8642/0893/files/applescript_commands.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5544/7202/files/43350527373.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0093/9164/files/alpha_kappa_alpha_membership_intake_process_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/1020/1499/files/criticism_of_rational_choice_theory.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9947/0486/files/xupibesawutevupetufixe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3082/3583/files/keep_track_of_your_bills_template.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005ee5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5EE5 5380 bytes
SHA-256: f6a652bbe733b0fb528f0f389be215c056f6666001987488a893f5ca8e55f2c5
font_01_sfnt_off0000712b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x712B 10624 bytes
SHA-256: 130eb1763ee52efe46250347d3332cc42d59f8662b33ff1d00a6dba9e51c21f1
font_02_sfnt_off00009554.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9554 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2

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