Malicious PDF — malware analysis report

Static analysis result for SHA-256 81d14edc4b230fea…

MALICIOUS

PDF

61.6 KB Created: 2020-08-22 11:55:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 3a5ae669291ee9e9d496e876291786d2 SHA-1: b5c76bd3a1f224e30f99f8e6a328a999d0f38369 SHA-256: 81d14edc4b230feab9b62b297301bb41bec34a158d208d2ef7d80d3434c7321d
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document functions as a lure, masquerading as a membership form to entice users to click on links. It contains a link farm of SEO-optimized PDFs hosted on Shopify, with a primary redirector pointing to ttraff.com. The ML classifier strongly indicated maliciousness, and the embedded links suggest an attempt to drive traffic to potentially malicious or phishing content.

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=national+library+of+pakistan+islamabad+membership+form In PDF document text
    • http://files.andywilsonmusic.net/uploads/1/3/0/8/130813985/xuvafaninopoju_ratuwuxenote.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/71135401618.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9672/7962/files/2285192684.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6982/4414/files/jilalapolulijij.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/3569/5016/files/jawowabazakefo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/5865/7430/files/temperature_sean_paul_lyrics.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9021/5073/files/mesowaxufovudanu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/0731/7912/files/cecil_medicine_25th.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1077/6478/files/avast_antivirus_for_windows_7_pc.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/9077/5965/files/jamb_biology_syllabus_2020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7437/8142/files/wovafivexijixakomajugiwib.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0805/5720/files/manual_of_freediving.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 5

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_off0000965c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x965C 5556 bytes
SHA-256: 3dd6ab419c206ce11ecb06be42287379f6e33f894a3081c8be7e5be23ac468a0
font_01_sfnt_off0000a919.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA919 11204 bytes
SHA-256: 8b757573dd44a5ae1bfcb93c4325a19402b5b69bff3db87101c4f8612f258b2e
font_02_sfnt_off0000cf2f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCF2F 17284 bytes
SHA-256: 9bb6502ec90f5e39cafa8321719c84a9415bb85551f502c2d9efb77893ae2bf1

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