Malicious PDF — malware analysis report

Static analysis result for SHA-256 b98c9830e62736fd…

MALICIOUS

PDF

39.6 KB Created: 2020-08-05 11:49:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 5235ce3f4a41cb219a10b28cc52f664d SHA-1: f306f1234f08f3a355a0137b10ba67b049afd9f0 SHA-256: b98c9830e62736fd27f3d2424b8d3ab666451f8cb0e8ea353c2dfacd818974f7
194 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, with at least one identified as a malicious redirector. The document body, though partially corrupted, contains the URL 'https://ttraff.ru/pify?keyword=hemostasis+adalah+pdf', which is flagged as malicious. The presence of numerous links, many pointing to Shopify domains, suggests a link farm or SEO poisoning tactic 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.ru/pify?keyword=hemostasis+adalah+pdf In PDF document text
    • http://files.farmsourceco.com/uploads/1/3/0/7/130776661/zuwagiwujivusa.pdfIn PDF document text
    • http://files.blissfamilychiropractic.com/uploads/1/3/1/3/131382223/9c6c1.pdfIn PDF document text
    • http://files.retreatatprairiewind.com/uploads/1/3/0/9/130969206/sugojabetavivivosora.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/1/0432/5664/3739/files/critical_thinking_questions_examples.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4571/6129/files/menimobutu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1895/1576/files/nyu_personal_statement.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9975/8497/files/pazewut.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5509/5716/files/gerawemewevisi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3391/1705/files/fixebetefafesuzeresovej.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/26443777516.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3028/1377/files/44306277481.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0704/9877/files/lesovezipuzafe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3685/9813/files/xogoweju.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3448/4648/files/tudebezubewojulitemiweti.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6200/9755/files/kelami.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6516/3422/files/warajawotabitelal.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9028/0609/files/45501690760.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_off00005e36.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E36 5148 bytes
SHA-256: 8486b1bf110a25a76d7c128d4bdfe446650df5da71ce2878c45e86b097624d93
font_01_sfnt_off00006f8c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F8C 9992 bytes
SHA-256: 82406ab642272821e485a7aa1b1299ed37024184caa7b440af7a5f3d12602b68

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