Malicious PDF — malware analysis report

Static analysis result for SHA-256 edea19ba529e5752…

MALICIOUS

PDF

33.6 KB Created: 2020-08-26 07:58:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 5c7856a64a8a2c9506d806d1d335b68e SHA-1: d8f4ef97d1f92f93492630a47a92515d00efa630 SHA-256: edea19ba529e575279ec759cfb7841b0b068f383a3563ca3df852ee3e87b01ad
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a critical heuristic firing indicating it links to a known malicious redirector, specifically `https://ttraff.com/pify?keyword=life+span+development+santrock+15th+edition+free`. This URL is presented as a lure for an academic resource, likely to trick users into clicking through. The document also contains a large number of external links, many hosted on Shopify, which is flagged as a link farm. No scripts were extracted, and the document body is heavily obfuscated, but the presence of the malicious redirector is sufficient evidence of malicious intent.

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=life+span+development+santrock+15th+edition+free In PDF document text
    • http://rotaxoj.lauramnutrition.com/uploads/1/3/0/8/130814328/xiwirite.pdfIn PDF document text
    • http://files.hephaestus6390.com/uploads/1/3/2/6/132695416/1150e.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/1/0433/8896/0919/files/88287715216.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3998/0710/files/understanding_business_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/7613/8648/files/fugedibotixor.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/sakemiribukewud.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8214/5182/files/9666879667.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0324/0871/files/calorie_counting_chart.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9672/7957/files/antimicrobial_activity_protocol.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0465/4478/1462/files/baviwoluwepomulunaden.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 3

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_off0000447f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x447F 5636 bytes
SHA-256: b78d120ed3eea080ec7de7e0f0c5a5e2e0f6d4097537cde6554161925cc7565f
font_01_sfnt_off0000578d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x578D 9964 bytes
SHA-256: 9ec80b2636fee7b211e5df0c5ea6f19ec586fc3dae28c8b6f45b908ac43f8745

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