Malicious PDF — malware analysis report

Static analysis result for SHA-256 84544d7d4a3e6f02…

MALICIOUS

PDF

75.9 KB Created: 2020-08-05 07:05:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 01f7743456887e4ba4bdfb6fee6ff434 SHA-1: 330f9ae8a677f2fa7777b1c11210f9efb8fb03b4 SHA-256: 84544d7d4a3e6f027021e7784b124bf2c5bcf5eab367286a0570f8b0a5325f3e
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links designed to appear as search results, leading to a redirector URL. This is a common tactic for phishing or malware distribution, masquerading as legitimate content to trick users into clicking malicious links. The ML classifier strongly indicated maliciousness, and the presence of a redirector URL confirms the intent to lead users to potentially harmful 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.cc/pify?keyword=bridges+math+home+connections+grade+5+pdf In PDF document text
    • http://files.phyzarre.com/uploads/1/3/1/4/131407572/7349395.pdfIn PDF document text
    • http://files.brigitteyearman.com/uploads/1/3/2/6/132681438/wexiw_memavilajij_gusadaxagoj_titejaduded.pdfIn PDF document text
    • http://files.affinitybodyworks.com/uploads/1/3/1/6/131636814/d244cf369.pdfIn PDF document text
    • http://files.chantitdownradio.com/uploads/1/3/1/8/131871518/02bd4f5e6b0d210.pdfIn PDF document text
    • http://files.drawnbyspirit.com/uploads/1/3/1/4/131453918/giguko.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/1/0434/1324/2005/files/37956345603.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9122/0887/files/begadilitilemozi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4295/5687/files/30666219267.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4981/0080/files/50958034832.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1811/7543/files/fetefurobebafolalulamoj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8184/2341/files/48505415446.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/8305/2696/files/fijaj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/23651487672.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1552/0935/files/bebejawoxa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4578/9600/files/12142160738.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3748/2405/files/museguxojabajem.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_off0000ed44.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED44 5708 bytes
SHA-256: 4dffd3feaaa44fee3d0a4732a83186ad5060eda554ef90db949dccee677c0b5f
font_01_sfnt_off0001008e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1008E 9848 bytes
SHA-256: 37fbe201d5bac329ce721875647ccf76baa6f8e366d228bcb3ae90637fde7c11

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