Malicious PDF — malware analysis report

Static analysis result for SHA-256 fbf253e32c1f214b…

MALICIOUS

PDF

40.1 KB Created: 2020-08-14 09:29:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: 9bdbcf230697fbd55dc7756e9e0b7f29 SHA-1: 62bed4eaac410b7b6fe71a110ffeb929870d2414 SHA-256: fbf253e32c1f214b59e6d6cbff1f755d1a50e9e2f8ea02129af10eefa6fde593
202 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'ttraff.com'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded URLs, many hosted on Shopify. The document body, though heavily obfuscated, contains the same malicious redirector URL and a benign-looking title 'Coerver soccer drills pdf', suggesting a lure. The presence of a visual download button heuristic further supports the social engineering aspect of this attack. No scripts were extracted from this sample.

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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/wb?keyword=coerver%20soccer%20drills%20pdf In PDF document text
    • http://files.adajunmakeup.com/uploads/1/3/1/8/131856852/wopevigegejapal.pdfIn PDF document text
    • http://files.triadchialpha.org/uploads/1/3/0/9/130969434/8247819.pdfIn PDF document text
    • http://files.ursulagoebelsellis.com/uploads/1/3/2/7/132741429/zepop.pdfIn PDF document text
    • http://mateviw.goodheartedgang.com/uploads/1/3/2/6/132695829/kekixu.pdfIn PDF document text
    • http://files.orienteeringalberta.ca/uploads/1/3/2/7/132712099/9674847.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/1/0440/2616/7461/files/12446567406.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2032/8865/files/wild_life_ring_tones.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/telisupuf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2329/3864/files/31026798607.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4457/7178/files/30798864322.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/7016/6942/files/73680803022.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9263/1962/files/computer_abbreviations.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3755/6899/files/92635319068.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0349/3022/files/noxosinagotiguwur.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2970/7422/files/bafobekipipaxas.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0470/6464/files/vakexevanufanevuduzadiv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8134/3900/files/23206427536.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_off00005f3e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F3E 4904 bytes
SHA-256: 6be7fb152ee1b6dfcfd7436f29b0554206460941563f9cb72143bcb73c08de6c
font_01_sfnt_off00007003.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7003 10408 bytes
SHA-256: 2cd60ff53a3ce47f276cfb0bb04638ee0e66da3f6d6d41bc74797adbffd434a8