Malicious PDF — malware analysis report

Static analysis result for SHA-256 9a12f2381403342e…

MALICIOUS

PDF

43.7 KB Created: 2020-08-09 13:31:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: c8fe0ec5b302cb88b45c0497ad793619 SHA-1: f4a5178ccfe2ed39e672949f3c73e903d8c53eae SHA-256: 9a12f2381403342e1623dbae517fef4b9cc180dce5b7fcdfdff9b9196f90682d
202 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, pointing to 'ttraff.cc'. This indicates the document is designed to redirect users to malicious content. The PDF also contains a large number of external links, many hosted on Shopify, suggesting a link farm for SEO manipulation or to obscure the final malicious destination. The document body, though heavily corrupted, contains fragments of what appears to be academic text and the URL for the malicious redirector, reinforcing the lure.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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.cc/pify?keyword=brownian+motion+and+diffusion+freedman+pdf In PDF document text
    • http://files.jacesridgefarm.com/uploads/1/3/1/8/131856195/filavanipe_luwigozatezono_powutum_pizoloxefojasu.pdfIn PDF document text
    • http://files.rarebirdediting.com/uploads/1/3/0/8/130813528/abc7fd.pdfIn PDF document text
    • http://files.scoilnaomhiosafadare.com/uploads/1/3/0/7/130740097/2848705.pdfIn PDF document text
    • http://files.printer-graphics.com/uploads/1/3/1/3/131380297/xidoliboluto.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/1/0430/8546/3713/files/1751433815.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9158/2357/files/alif_novel_complete_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1466/7934/files/kalod.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7278/1478/files/isomorphism_linear_algebra.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6222/2232/files/wolaleditiraba.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1615/9381/files/83999947838.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2025/3344/files/badevajirodafusoralaxix.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4504/4892/files/70503791931.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5115/5618/files/9684541091.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6377/9221/files/kakug.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0145/4496/files/bawebufebejinutiwa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0230/6468/files/wupigeboxotivodajub.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006d0d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6D0D 5296 bytes
SHA-256: 7603579d0f2f9874477fa7d93c865db02585b8a6208f22f791787c9dc8619c5f
font_01_sfnt_off00007f12.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7F12 10128 bytes
SHA-256: 7c086d610185e64bf34e875be33e839f591a65c9776ce9081b4caad3686b089e