Malicious PDF — malware analysis report

Static analysis result for SHA-256 7fda065ae4285d21…

MALICIOUS

PDF

72.0 KB Created: 2020-11-11 06:07:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 057722e81952aac5fe7a051a2ded3024 SHA-1: 9d3df220766871d5dfc18ce5953d65cc9e052765 SHA-256: 7fda065ae4285d210017354988512fc3ac3c846dc0d09a07e7e0415198078f47
214 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file contains embedded URLs that point to a redirector and a link farm, indicating a phishing or malicious redirection attempt. The ML classifier and ClamAV detection strongly suggest malicious intent. While no scripts were directly extracted, the PDF structure and embedded links are indicative of a spearphishing attachment designed to lead users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://ggtraff.ru/aws?keyword=borderlands+2+randomizer+cheat+table In PDF document text
    • https://cdn-cms.f-static.net/uploads/4380082/normal_5f92697d0e755.pdfIn PDF document text
    • https://tixovokibena.weebly.com/uploads/1/3/4/1/134109053/3476555.pdfIn PDF document text
    • https://davavenetu.weebly.com/uploads/1/3/4/5/134500413/xigosoferabipikituxa.pdfIn PDF document text
    • https://midepixa.weebly.com/uploads/1/3/4/6/134622545/zetanuviro.pdfIn PDF document text
    • https://xisegebimir.weebly.com/uploads/1/3/4/3/134340076/3188256.pdfIn PDF document text
    • https://kuvikupomudu.weebly.com/uploads/1/3/4/4/134457818/worug.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4405903/normal_5f93467fdc910.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/86e2c00b-28fe-4197-8b32-13ec44490329/38421945099.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dacd1a86-3c97-498a-a0f0-9fb73025be7f/kozuzafubovixoxijufe.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9bfcaa2f-2bed-4022-bc8a-72e411109dc3/57297308045.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8c0f6b85-f701-4716-9406-d5e5ca3633db/97491208288.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7f165067-c3d7-43d9-9726-79bd8f7ef1e3/z_shadow_sign_in_form.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e40d01a1-4e2f-4daa-bb1f-69bf3c3f673a/12823233678.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d03badb9-5b1a-4474-9d71-642fa6cc9d9e/davosobekelutan.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_off0000dac7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDAC7 5548 bytes
SHA-256: ac1688c12a8941aba0b54a83d82be06daf47bd3cfdf75db4694cef8695dcdeda
font_01_sfnt_off0000ed7f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED7F 11140 bytes
SHA-256: c7fdd2e9d631eaaf74ce3659e814c1ed34292dede2427a445b60b82f6a20a284

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