Malicious PDF — malware analysis report

Static analysis result for SHA-256 7da74089fc5d04e8…

MALICIOUS

PDF

50.0 KB Created: 2020-08-11 05:51:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 1f5f9a9af4149328295c97ba86c8fde9 SHA-1: ff1f32a13bd9667bceba48ba4c756cf4727ad155 SHA-256: 7da74089fc5d04e85744b63099e663c0ae3de214593dd762e350a9ff768dd265
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous links to external PDF files, many of which are hosted on domains associated with link farms and redirectors. The primary redirector URL, https://ttraff.com/pify?keyword=weekly+activity+schedule+pdf, is flagged as malicious. This suggests the document is part of a phishing or scam campaign designed to lead users to 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=weekly+activity+schedule+pdf In PDF document text
    • http://files.epbemployeehealthcenter.com/uploads/1/3/1/4/131438604/5060935.pdfIn PDF document text
    • http://tasiw.erikgjesfjeld.net/uploads/1/3/0/8/130874493/pekoralud-semumutofeju-monalopita-ruxiwugek.pdfIn PDF document text
    • http://files.sideofsweat.com/uploads/1/3/0/7/130776619/555d01.pdfIn PDF document text
    • http://noxuzapu.lmstevensons.com/uploads/1/3/0/8/130874278/9956844.pdfIn PDF document text
    • http://jatijog.reachingthroughteaching.com/uploads/1/3/2/7/132740978/3953cd86a6c.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/1/0435/3549/9418/files/24910696956.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6938/2568/files/3843235761.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9915/1768/files/97725494601.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/9352/2587/files/mevalakiborozezex.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6723/5742/files/xavafumilewozajewe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5618/4996/files/lafosanisiwe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5514/4347/files/goderibirirove.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6300/8664/files/sepudamapode.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6423/7992/files/final_fantasy_7_rom.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5359/6310/files/tosazawebenij.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2482/4995/files/rujexuxilon.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5650/4744/files/vejiminokibem.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/talijofazejodo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/7355/1001/files/sabaxebi.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006d87.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6D87 5384 bytes
SHA-256: 2b783991758d42b77782f47d687f642dca861bacd1622ac1a781214ff15df5c6
font_01_sfnt_off00007fed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7FED 9944 bytes
SHA-256: 638e7124a19998f7c95baa3d2be94f30460106d70ac73ca637343815f527d0f1
font_02_sfnt_off0000a219.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA219 17236 bytes
SHA-256: 05979f8b4ef68d3c608ac47bbd73065928a6418d31a4576b929107021c50144f