Malicious PDF — malware analysis report

Static analysis result for SHA-256 860fd9259c66b88a…

MALICIOUS

PDF

52.2 KB Created: 2020-08-07 23:29:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 2970d0d848729432159e02b68be49ac8 SHA-1: bac369bfda0199d4a6266380822a330e7b69fdd7 SHA-256: 860fd9259c66b88a6ca2ed8521d5d1a3e965176c2150d48168d7758075c9df99
194 Risk Score

Malware Insights

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

This PDF document contains numerous links, many of which point to a redirector service that is known to host malicious content. The document's content and structure suggest it is part of an SEO poisoning or link farm attack, aiming to drive traffic to malicious sites. The ML classifier strongly indicated maliciousness, and the presence of redirector links confirms a malicious intent to lead users to harmful destinations.

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.ru/pify?keyword=teachers+day+speech+in+tamil+pdf In PDF document text
    • http://files.verdancecreations.com/uploads/1/3/0/7/130776575/kibunux-fevizu-xutajoxisij-makoz.pdfIn PDF document text
    • http://files.minimountainstudio.com/uploads/1/3/2/7/132712099/timage.pdfIn PDF document text
    • http://files.modelplanmedia.com/uploads/1/3/2/6/132682833/timavojinelaj.pdfIn PDF document text
    • http://files.sanikadeshpande.us/uploads/1/3/1/3/131398360/1111d6.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8714/3839/files/81163148055.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5128/6690/files/lawerajazatusu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3152/7575/files/48978583949.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9782/6207/files/bedobinarifixoj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2441/4882/files/latonowapobukuk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5354/7677/files/77566709220.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6127/1959/files/12446425626.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4273/4237/files/24743925601.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6052/7253/files/76824255690.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1619/2153/files/86164099131.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7505/0395/files/letedutaxutamipivapo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8692/1376/files/25071328628.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1805/1996/files/canon_5d_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9590/8761/files/cystic_hygroma_management.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007513.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7513 5444 bytes
SHA-256: 0233b3bdf02e649394d055faf473d9fe1dac7176868b420cb06bfbc35f342673
font_01_sfnt_off00008773.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8773 10352 bytes
SHA-256: b80238511e4bdeeea44f5c7f3644a75935f0d95cb5668a16444c7490c57f3620
font_02_sfnt_off0000ab11.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAB11 7128 bytes
SHA-256: a98d75d231bc01ceffc37623ef01a41ad5b66da1e8fee04d4dc7337400848715