Malicious PDF — malware analysis report

Static analysis result for SHA-256 4fe2acdb1b6a04b4…

MALICIOUS

PDF

50.6 KB Created: 2020-07-24 13:48:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 5ffc5d8c30485658d6c9a01df7ae0b5a SHA-1: 7a0afc673564a8c6e0e8555ebf77ea4c876abd04 SHA-256: 4fe2acdb1b6a04b4e418e3571b4dff1fe11505cd0460332ffda63069126cb6cf
194 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to Shopify domains hosting other PDFs, suggesting a link farm or SEO poisoning tactic. One critical heuristic identified a link to a known malicious redirector, ttraff.cc, which is likely used to obscure the final malicious destination. The document body, though heavily obfuscated, contains text related to 'high school informative speech topics', likely a lure to encourage users to click the embedded links.

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.cc/pify?keyword=high+school+informative+speech+topics In PDF document text
    • http://files.prigitalsolutions.com/uploads/1/3/1/0/131071076/577897.pdfIn PDF document text
    • http://files.wyonghighcareers.com/uploads/1/3/1/0/131070579/94bd3d5850ed24.pdfIn PDF document text
    • http://files.arubathewedding.com/uploads/1/3/2/3/132303126/216469.pdfIn PDF document text
    • http://files.hangarmom.com/uploads/1/3/1/3/131382092/7958681.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/1/0432/0568/9504/files/bovidapabalekadew.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/8662/4406/files/59163239426.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7338/8190/files/vubuvul.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/japoxotoruzub.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9040/1687/files/72112314087.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4424/1562/files/suviraripeforufenu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/8651/0232/files/mebuziteg.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2852/7776/files/60535912922.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5637/3670/files/difokifusefolonufogeb.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3947/3314/files/16722802792.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8512/8090/files/13391805233.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
    • https://savannah.gnu.org/projects/freefont/In PDF document text
    • http://www.gnu.org/licenses/In PDF document text
    • http://www.gnu.org/copyleft/gpl.htmlIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000077fd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x77FD 6568 bytes
SHA-256: 611f3db65d644b1c54ca9459fd1b922419f4f90529f892feeb7d4571f542e8e8
font_01_sfnt_off0000884c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x884C 5236 bytes
SHA-256: 6a7a7ec77bb68f0cdf5e39c8ba30d74064ea921044e703cd2955ca4641d8304a
font_02_sfnt_off000099ec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x99EC 10208 bytes
SHA-256: 8ea55fd590ff0eb9fbc0cc69019d3fd9a16771cd62bc320a93b553b8dca1aca1

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