Malicious PDF — malware analysis report

Static analysis result for SHA-256 3b23b4042b831e63…

MALICIOUS

PDF

114.4 KB Created: 2020-08-12 05:24:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 8fb6aa83e2e578879847d55b8b1f52d4 SHA-1: b39b9705cfad22e536444b2a76c37152e3366422 SHA-256: 3b23b4042b831e6333d1097115189d4b3998eab0793b7135334f6e46b79a182b
202 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with one critical heuristic identifying a redirector link to 'ttraff.com'. This indicates a phishing or malicious redirection attempt. Another heuristic flags the document as a link farm, suggesting an attempt to artificially inflate search engine rankings or distribute malicious content. The presence of numerous Shopify-hosted PDF links further supports the link farm hypothesis.

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.com/pify?keyword=biosynthesis+of+hormones+pdf In PDF document text
    • http://files.thelionschoice.com/uploads/1/3/1/3/131381772/dfa6a.pdfIn PDF document text
    • http://files.falkland.org/uploads/1/3/0/7/130738998/9856055.pdfIn PDF document text
    • http://files.northernmichigangallery.com/uploads/1/3/1/3/131380493/loroxirun.pdfIn PDF document text
    • http://files.hansonfoodpantry.org/uploads/1/3/1/4/131453188/kuwogopuzil.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/1/0433/0687/7080/files/96328102714.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0964/5478/files/67946713983.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7307/7409/files/xaxudopekupadawelewep.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0833/4744/files/nizupatuwodugiwogoto.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7077/4677/files/15659089248.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1714/1415/files/49833951097.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0562/3972/files/gajawabuvenedijopevenudi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5586/4215/files/69561159271.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6951/2607/files/fekebajugefirigukumapes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2482/6014/files/cardiovascular_physiology_9th_edition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6286/0699/files/gapitafix.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 8

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_off000182fc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x182FC 5192 bytes
SHA-256: 5f33488d21b4204976d4d9e2124c5f9159b928ad1ecab93fed0d8de2e71dca16
font_01_sfnt_off00019482.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x19482 12432 bytes
SHA-256: 10cd60b3f2299d9accc8bb947ebddfbaa6ca9194437b0c168ed494ff6d0c8866

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