Malicious PDF — malware analysis report

Static analysis result for SHA-256 6b72eb3f6d713ec4…

MALICIOUS

PDF

69.5 KB Created: 2020-08-02 23:10:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 9248face44668555926ae1b4116a7aa1 SHA-1: 67a780810297deecbad651bb1651dec92ab1c2b6 SHA-256: 6b72eb3f6d713ec4c57ad5af57b2186df1ff6a4c406d389d3ef268a4d2da3934
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

The PDF contains embedded links that redirect to a malicious URL, identified as a redirector for potentially malicious content. The document body, though heavily obfuscated, contains a reference to the same malicious URL. The presence of numerous external PDF links suggests a link farm used to obscure the final destination and potentially for SEO manipulation to increase visibility.

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=wedding+declaration+of+intent In PDF document text
    • http://files.piecedoccasion.net/uploads/1/3/1/1/131163927/9c0811b562c5234.pdfIn PDF document text
    • http://files.mareadingcouncil.com/uploads/1/3/0/7/130775970/bb414068.pdfIn PDF document text
    • http://files.collettecollingeart.com/uploads/1/3/0/7/130775735/pofezibikamok_mopilaf_povebun_mobumuzonine.pdfIn PDF document text
    • http://files.nadinenapear.com/uploads/1/3/1/4/131438499/xajuvixatez-tujata-dulelefalisi-wibiwixaguzawe.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/60561448525.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6674/4214/files/safufasunejobusig.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0026/5878/files/jelumujenezufujoxeguluk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6633/6167/files/xobimijuforazuwokizumezib.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9567/8357/files/63811843629.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1868/9432/files/sasivefuvudejisem.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9220/5978/files/zusosolun.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5735/6710/files/33804731024.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8922/3066/files/32354343606.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7665/8087/files/conceptual_physics_10th_edition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5724/9430/files/lonab.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
🗂 Part of campaign: collettecollingeart.com 4 samples

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_off0000d47e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD47E 5024 bytes
SHA-256: d84c5f2fc63b8a12463e739b2dd39ce68e9b84c17b018ea812435dea377b089d
font_01_sfnt_off0000e5b4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE5B4 10276 bytes
SHA-256: 75875d7cf13612ac73ce7fc52b3861dabc6d021e13dc4f128a3b62f8ee42cd39

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