Malicious PDF — malware analysis report

Static analysis result for SHA-256 ac734c0b494b7a97…

MALICIOUS

PDF

43.9 KB Created: 2020-08-24 21:26:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: e4104ec7735eaa90e589934394e8ebaf SHA-1: 1def363db10b5798b1712a5e253ed1921d9b7f33 SHA-256: ac734c0b494b7a97187410b003ba705e3bfc51cb5bfc069163aad8a81c79f1d7
194 Risk Score

Malware Insights

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

The PDF contains a link farm, with one primary link pointing to a known malicious redirector. The document body, though heavily obfuscated, contains the URL 'https://ttraff.ru/pify?keyword=blank+t+shirt+design+templates', suggesting a lure to download or view design templates which redirects to malicious infrastructure. The ML classifier strongly flagged this PDF as malicious, and the presence of numerous embedded URLs, many pointing to Shopify, further supports a link-farming or redirection-based attack pattern.

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=blank+t+shirt+design+templates In PDF document text
    • http://files.signifytalismans.com/uploads/1/3/2/3/132302871/1445957.pdfIn PDF document text
    • http://zorefa.benjamindbrown.com/uploads/1/3/2/8/132814930/ce246324.pdfIn PDF document text
    • http://files.littlepinkhousesproduce.com/uploads/1/3/1/1/131164046/bidid.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/1/0433/0687/7080/files/45035229099.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/0198/4662/files/sijudinedufexikufi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/7597/4821/files/58441018257.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2036/1629/files/discord_mass_delete_messages.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4973/8650/files/bs._to_app_apk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/65529241957.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6762/1028/files/95057222875.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0445/4989/8399/files/holt_algebra_2_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6019/1641/files/45778331188.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3694/2234/files/fogixuxugumuxuxekusekan.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0214/9539/files/nidukozunopulakofuv.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 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_off000060de.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60DE 5164 bytes
SHA-256: 20411b5655efa37ee61889ec14aac6ca2a3ac6b513fbd5b8fca7dd3d17c47832
font_01_sfnt_off00007233.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7233 10204 bytes
SHA-256: c0a252ee8999da45e62370734f5588dbe6328bef6c6aa6ab02fd98ec151c3991
font_02_sfnt_off000094e8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x94E8 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333

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