Malicious PDF — malware analysis report

Static analysis result for SHA-256 3c86be43dd19cceb…

MALICIOUS

PDF

45.1 KB Created: 2020-08-24 07:00:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: cb66091275e2e65fb1ea61590d8e8dc2 SHA-1: ed1586f922fd82714dd1dff0be8467606cb04793 SHA-256: 3c86be43dd19cceb14f9813539b4f109759548181f9f27b0a8333a893e50cf8a
194 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.com, disguised with a seemingly innocuous keyword. The document body, though heavily obfuscated, contains the same URL and a reference to a worksheet, suggesting a social engineering lure. The presence of a large number of external PDF links, many hosted on Shopify, indicates a link farm designed to obscure the malicious redirector.

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=direct+speech+worksheet+grade+3 In PDF document text
    • http://files.thursdayschildsailing.com/uploads/1/3/1/4/131454466/52a59960d4a9d9.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/1/0434/2602/1527/files/pixurevixi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6078/9409/files/10927386781.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0448/2121/7442/files/corong_pemisah.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2672/7580/files/moserep.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5519/4011/files/xogadozikasazoji.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4094/8903/files/23690986381.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8085/1362/files/app_cleaner_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1237/4174/files/drivers_manual_in_spanish.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8627/4967/files/93656755240.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5409/6806/files/pepofunezekagifugepufo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5965/9420/files/makerere_university_courses.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

Related samples 3

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

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007253.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7253 5620 bytes
SHA-256: 412fd108ea59bed17aa88135076a477dd347419a7c83a1ae9c0d5461c522b878
font_01_sfnt_off0000857e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x857E 9968 bytes
SHA-256: d14fde8396ec14ca8403ec083878ba706b91d50abdcb6503eb9ec8feb5b30f6a

Open this report in the interactive analyzer, or submit your own file for analysis.