Malicious PDF — malware analysis report

Static analysis result for SHA-256 b22daf47469b7ea9…

MALICIOUS

PDF

39.0 KB Created: 2020-08-21 04:28:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 64001749da49b45e4133ebdb670c95f8 SHA-1: a61e2532b1a64bafb6826aad1d8fcd885e966911 SHA-256: b22daf47469b7ea98896171bcbcdd31d9cb6495082c08cd3be2c49c3e97fbf5a
194 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.com, disguised as a worksheet answer key. The document body and embedded links suggest a lure to download further content. The PDF also hosts a large number of links to other PDFs, many hosted on Shopify, which is characteristic of SEO poisoning or link farm tactics to improve search engine ranking for malicious content.

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=immune+system+and+disease+worksheet+answers In PDF document text
    • http://files.myvirtualvacations.net/uploads/1/3/0/7/130775971/c907b.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8259/6004/files/pubatudixaxolenosanil.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3815/4653/files/19466353078.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4070/1606/files/61722518188.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9780/8279/files/arquetipos_del_inconsciente_colectivo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3009/3728/files/73945991929.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5042/6780/files/20820723679.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4206/1986/files/70292493256.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9654/7230/files/42362670741.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3761/3461/files/compound_complex_sentences_worksheet_lesson_5.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7877/0076/files/engineering_dynamics_jerry_ginsberg_solution_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1274/1525/files/california_dreamin_sheet_music_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6018/9594/files/18585843119.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
🗂 Part of campaign: myvirtualvacations.net 3 samples

Related samples 2

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004fdf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4FDF 5112 bytes
SHA-256: 4caeff701d796c37c2a74ccc453c116380bd3512edcea601eb66f5ff307ace05
font_01_sfnt_off0000611d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x611D 9376 bytes
SHA-256: de3f9c7087059fcea6235e197e831615795e43d37ed2f4d3d0d68509b0d540f6
font_02_sfnt_off00008117.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8117 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f

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