Malicious PDF — malware analysis report

Static analysis result for SHA-256 73276009fd336a98…

MALICIOUS

PDF

69.9 KB Created: 2020-12-26 03:19:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 9f90ff48771e419f79eb34a5bb5b868f SHA-1: 8b22dfcf6e7e440edefb59bbaa2b8140414cf26e SHA-256: 73276009fd336a98b394fedf8828137503e01d46224881d4521d99da29765534
214 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains multiple embedded links, with one identified as a known malicious redirector. The ML classifier and ClamAV detection strongly indicate malicious intent. The document body, though heavily obfuscated, appears to be a lure related to 'fairy jigsaw puzzle game of thrones', suggesting a phishing or scam attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • 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://traffmen.ru/strik?utm_term=fairy+jigsaw+puzzle+game+of+thrones In PDF document text
    • https://cdn-cms.f-static.net/uploads/4391893/normal_5fba7d18991b0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4415526/normal_5fafe541e6b02.pdfIn PDF document text
    • https://jufapagemegugux.weebly.com/uploads/1/3/4/8/134860181/wonivijatot.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4480899/normal_5faec0a8535aa.pdfIn PDF document text
    • https://fudawaso.weebly.com/uploads/1/3/4/3/134317256/2262365.pdfIn PDF document text
    • https://fafexozoruxefok.weebly.com/uploads/1/3/4/5/134527426/57efad732.pdfIn PDF document text
    • https://xikosenazegan.weebly.com/uploads/1/3/0/7/130739601/6fbee1.pdfIn PDF document text
    • https://cdn.sqhk.co/pimibopugugo/hghjczC/89258727776.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/a4f1c65c-6523-49a2-8221-d640771b0b1e/12078083543.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a882170b-4c0d-48de-b31a-b27b5cea2e14/32436078826.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5d18bdba-15e0-456a-9939-515f6fec9fec/the_shark_and_the_sardines.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8e0c3d8e-c81a-41b4-b7a3-f16deb4a796c/67929191446.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/11e3b0b7-e2d2-474a-a95a-c9b9d0db722c/dimasilijamonex.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_off0000d2cc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD2CC 5588 bytes
SHA-256: 1e55993ef09dbdfe014c81eaad27d4aa0bac1f2dbca7fffce9fbb255900e5dd7
font_01_sfnt_off0000e5d5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE5D5 10756 bytes
SHA-256: 70eccc756fa3084d4520e07c3e42ee94b44e30b5b766c7c4c1e75038225a20cb

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