Malicious PDF — malware analysis report

Static analysis result for SHA-256 a6a7489acc68ced9…

MALICIOUS

PDF

59.9 KB Created: 2020-08-08 14:53:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 4f54b68f5155fe648834c3f40622751e SHA-1: 8310aceda3b97325b5160a6a89e894c15e38f9e4 SHA-256: a6a7489acc68ced985da81d46a449946296487ebfe5d57f7f261050ad7d3a2dc
194 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link pointing to 'ttraff.com'. The document body, though heavily obfuscated, contains the same URL, suggesting it's the primary lure. The presence of numerous external PDF links, many hosted on Shopify, indicates a link farm strategy, likely to improve SEO for malicious content or to obscure the ultimate destination. The file was authored by wkhtmltopdf, a common tool for generating PDFs from web content, which can be abused for malicious purposes.

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=business+strategy+pdf+journal In PDF document text
    • http://files.genevieve-simon.com/uploads/1/3/1/1/131164425/forajiruzujox.pdfIn PDF document text
    • http://files.ksasteel.com/uploads/1/3/0/7/130739525/wuruvinu.pdfIn PDF document text
    • http://files.gordonjames.net/uploads/1/3/0/7/130739993/tawajizoguda_dixogurozela_dipebefiromu_xorobe.pdfIn PDF document text
    • http://files.styer-fitzgerald.net/uploads/1/3/1/1/131164364/922863.pdfIn PDF document text
    • http://files.mtolivetofperry.org/uploads/1/3/1/8/131871621/4f8f684f94.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/1/0432/3416/4893/files/nogakufaxen.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3981/6861/files/fukunita.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/7527/0811/files/nespresso_inissia_descaling_instructions.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/0542/5310/files/coffea_canephora_robusta.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1883/0492/files/vadajetagogot.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0127/3750/files/download_ahange_jadid.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8038/4674/files/danokewujexuf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/4768/8091/files/chemistry_notes_for_ssc_cgl_in_english.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9054/2753/files/anorectal_anatomy.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9423/7589/files/psp_custom_firmware.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7194/7430/files/pierre_bourdieu_outline_of_a_theory_of_practice.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2208/1448/files/lotarujiposevewekem.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00009ec9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9EC9 5316 bytes
SHA-256: 6f878cbabb5e6b6bc64b064fb550af09ce7d00377e8e388310a1b9c3b2425dbb
font_01_sfnt_off0000b0f4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB0F4 10312 bytes
SHA-256: 02cf80a20580ed713efc241b4a0881b1f43e0a3acd7b88452307b1f3c7fbde70
font_02_sfnt_off0000d424.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD424 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c