Malicious PDF — malware analysis report

Static analysis result for SHA-256 facb89cd2a2d36ed…

MALICIOUS

PDF

43.8 KB Created: 2020-08-05 15:49:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 5cf5f0cc48c597a10c90bf419f370dc2 SHA-1: 69c19add3f1bb531a1afd8b9c843361c7f02bf2f SHA-256: facb89cd2a2d36ed38e8389ae459e12cac933633f32cbf4296107599641b3a9d
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many pointing to Shopify domains, but one critical link directs to a known malicious redirector at 'ttraff.ru'. This suggests a link farm or SEO poisoning tactic to distribute malicious content. The document body, though heavily garbled, contains text related to an audit report and the malicious URL, reinforcing the lure. No scripts were extracted, but the primary attack vector appears to be social engineering via a deceptive document and a malicious link.

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=relat%25C3%25B3rio+de+auditoria+interna+exemplo+pdf In PDF document text
    • http://files.outboardpros.com/uploads/1/3/1/4/131407547/95bd854f.pdfIn PDF document text
    • http://files.mygurlstuff-jewelry.com/uploads/1/3/1/1/131164546/e4741389.pdfIn PDF document text
    • http://files.marydarwalljewelry.com/uploads/1/3/1/8/131856318/mirej_ridebabi.pdfIn PDF document text
    • http://files.margierossi.com/uploads/1/3/1/4/131453206/f2cdf9.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/1/0430/3929/3593/files/71820794370.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/3152232763.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5709/4551/files/verifone_ruby_2.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/9307/1774/files/17584809172.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6995/5486/files/67222863004.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9515/5105/files/vusilapogadesuniku.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3021/6855/files/77266525890.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9765/3397/files/pudofisubetosowidivuvewob.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9284/4448/files/how_to_delete_groove_music.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6412/1749/files/mezober.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6612/1623/files/21483722724.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4541/2245/files/aacn_procedure_manual_for_critical_care.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_off00005dbf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5DBF 5104 bytes
SHA-256: fdbc759109672b6c0e8cd1651f059ab8c270a88e53aede7fdd992db166a49d7c
font_01_sfnt_off00006eca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6ECA 11464 bytes
SHA-256: 621db48bec777780caf8a20868114cc4a95cd1cff3e6de87527be4a92822f59d
font_02_sfnt_off00009175.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9175 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333