Malicious PDF — malware analysis report

Static analysis result for SHA-256 f73f68d8b6f666b5…

MALICIOUS

PDF

41.3 KB Created: 2020-08-18 17:21:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 7041084981042175d2e1ecae08e8591c SHA-1: 63d0bd51c0fa69346f5b3512abad527c33f3e545 SHA-256: f73f68d8b6f666b577196e2350fe0c3baf226ac4b6de095c1fcfba4fb7b8de63
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF file contains a lure for an advance-fee scam, disguised as trivia questions, which is a common tactic for phishing. It embeds numerous links, including one to a known malicious redirector at 'ttraff.ru'. The document body, though heavily obfuscated, contains the URL 'https://ttraff.ru/pify?keyword=american+history+trivia+with+answers' which is likely intended to lead the user to a malicious site. The presence of a link farm further suggests 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.ru/pify?keyword=american+history+trivia+with+answers In PDF document text
    • http://files.wightmantennis.org/uploads/1/3/1/4/131437194/vonodafemaxoda.pdfIn PDF document text
    • http://files.luxeavie.net/uploads/1/3/1/0/131069950/niboxidijaza.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/1/0431/0361/7173/files/rurijukur.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/54748680829.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2884/8538/files/wobovipimelagagivigik.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/38935964995.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8050/6785/files/61256889526.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3920/3229/files/dibujo_arquitectonico_simbologia.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9181/2767/files/brain_teaser_interview_questions_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/1275/7400/files/41613892469.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0341/2633/files/maxodonotafezo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/6280/2085/files/ragageku.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5935/5558/files/gb_whatsapp_app_store.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4433/8838/files/application_of_priority_queue_in_data_structure.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4085/7494/files/technical_difficulties_tab.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 6

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_off00006277.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6277 5248 bytes
SHA-256: 38e80a06f59f60de5b24e6730c053a12ffc7b361c9f4cf36a1f33f53fee27d42
font_01_sfnt_off0000742e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x742E 10500 bytes
SHA-256: b4310f11da337c43e749c14c2d27873adc8a66007fd48b38286788c0ea2ed678

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