Malicious PDF — malware analysis report

Static analysis result for SHA-256 e1bec3c1c3582de2…

MALICIOUS

PDF

34.5 KB Created: 2020-08-11 02:09:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 60f21312e3b73e893dfc3cb914f68bc3 SHA-1: b9b9cdcee6e2bf16db51aa191b48f1fc65ee3f40 SHA-256: e1bec3c1c3582de22314a84b81bb9cc1577cdca11608be6b5aaa7aec3785ef1d
194 Risk Score

Malware Insights

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

The PDF contains a mass of external links, many pointing to Shopify domains, designed to appear as search results for a book download. One critical heuristic indicates a link to a known malicious redirector, ttraff.cc, which is likely the primary payload delivery mechanism. The document body itself is heavily obfuscated but contains the same redirector URL, reinforcing its malicious intent. The presence of numerous PDF links 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.cc/wb?keyword=goyenda%20ashok%20thakur%20samagra%20pdf%20free%20download In PDF document text
    • http://batokax.athenalenawee.org/uploads/1/3/1/3/131380600/acf2a7c7.pdfIn PDF document text
    • http://danopase.invenssouthafrica.com/uploads/1/3/1/3/131398020/gewomejedagozura.pdfIn PDF document text
    • http://files.dianeperell.com/uploads/1/3/1/4/131453645/vebesukezofonev.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/1/0435/8638/8136/files/55338094984.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/4155504299.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7298/8071/files/voximukifidokajokomafuvo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/5362/2182/files/volekudib.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9277/8901/files/zaxuxezuxonumof.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/6720/9893/files/xisetowupomisisawasolab.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8940/3810/files/juzunona.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4722/3458/files/23921062515.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6759/6184/files/44340705722.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8486/3893/files/rang_and_dale_s_pharmacology.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8906/8185/files/cae_advanced_trainer.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7441/2949/files/korenisaduwajulilosenu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5850/3590/files/gold_gradient_illustrator.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 7

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_off000046f1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x46F1 5744 bytes
SHA-256: e97ffe2019a829d8c11e7378e6ec947666993af318fc9d38eb0935687877216b
font_01_sfnt_off00005a7c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5A7C 10148 bytes
SHA-256: 8805a24631874cfadafab85372a945960f056d503de58cfa8e8fb38b7033596e

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