Malicious PDF — malware analysis report

Static analysis result for SHA-256 2ca4dc166912e624…

MALICIOUS

PDF

47.2 KB Created: 2020-08-13 22:18:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 9038cdce16a3f005ad7ff031a8a3f7b1 SHA-1: e25c35e3a59bece6592a336b3e169926254d99af SHA-256: 2ca4dc166912e6240ffeca8ab0c17da5064764e631bc194cfe06968f7b9c32d7
194 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. This indicates an attempt to redirect the user to a malicious site, likely for phishing or malware delivery. The document also contains a PDF link farm heuristic, suggesting it's part of a larger SEO poisoning or link spam campaign. The embedded URLs, including the primary malicious one, are the highest priority IOCs.

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=bourdieu+distinction+pdf In PDF document text
    • http://setof.ayrshirejudoclub.co.uk/uploads/1/3/1/6/131606289/nodaxazofowiv.pdfIn PDF document text
    • http://files.fdbda.com/uploads/1/3/1/4/131453429/c38bf2b5.pdfIn PDF document text
    • http://taruzok.westerhamu3a.org/uploads/1/3/1/8/131857598/tapefubodebepedoti.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/1/0434/9050/8960/files/42950636907.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6753/1673/files/pebonubegewogerizuguko.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/8310/8253/files/piletilutosokawuvavuwaw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6861/1989/files/69304618348.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0453/8662/9288/files/b._ed_result_2020_odisha.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9563/7659/files/mx_record_lookup.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/duzawubemamomavokam.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1214/5823/files/american_english_file_3_teacher_s_book.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3173/2125/files/xoxez.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0444/4828/4839/files/bierce_an_occurrence_at_owl_creek_bridge.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7217/6796/files/patadem.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5764/2648/files/dr._adonijah_ogbonnaya_books.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1810/0637/files/chacha_chaudhary_comics_in_english_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6116/5723/files/764628655.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_off00006601.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6601 4956 bytes
SHA-256: 60ccc720cbfcb0450a0689bdfd8084fbf8330e4e372062baf14812608e166729
font_01_sfnt_off000076f4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x76F4 9896 bytes
SHA-256: dd7f4d90d4959e7108aeec3d7263285faee8003ea8d584740eb446cf12b77383
font_02_sfnt_off000098b5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x98B5 16448 bytes
SHA-256: 4972c892cf783310df7ebe7a43044f7b4e4d650808add06809858f2f0e6eeb09