Malicious PDF — malware analysis report

Static analysis result for SHA-256 6fb1088a6a960070…

MALICIOUS

PDF

32.2 KB Created: 2020-08-19 03:04:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 61dd17ffb4177912aa154dccaf6514c3 SHA-1: 28b1b587c6dc31c512a20781bf2418804fbac611 SHA-256: 6fb1088a6a960070b44325b5616b7064aa88b3c9b4d8ac67575b5a6ff401e9e4
194 Risk Score

Malware Insights

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

The PDF contains a link farm and a malicious redirector URL, suggesting a phishing or scam attempt disguised as a worksheet. The ML classifier strongly indicates maliciousness. Although no scripts were explicitly extracted, the PDF structure and embedded URLs point towards an attempt to redirect the user to malicious infrastructure.

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=factor+polynomials+worksheet+kuta In PDF document text
    • http://files.carriedrobnick.com/uploads/1/3/0/7/130739462/xobeworaloz-vivudu-gavomor.pdfIn PDF document text
    • http://files.cshanice.com/uploads/1/3/1/8/131871698/5531453.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/1/0429/8699/5863/files/antimicrobial_stewardship_guidelines.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0444/2708/3943/files/untrusted_server_certificate_android_studio.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1541/3661/files/rogovosuwopuvifuwa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4490/4865/files/dutebafadeku.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7880/2846/files/xavadufimu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2384/2983/files/robe_of_the_archmagi_pathfinder.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2159/6834/files/59609206004.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3434/3574/files/lipol.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/8711/6965/files/60241523842.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0742/7238/files/lasafolo.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_off000042e8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x42E8 5384 bytes
SHA-256: 35c2395b99940707e4f5c9e29c8e98f86da7a919873ead3a627b7acd140a5617
font_01_sfnt_off00005524.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5524 9108 bytes
SHA-256: d748d18f1478fc6a41ce9256b34a3ed918c7c569e168b47d03158fdca84cafd9

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