Malicious PDF — malware analysis report

Static analysis result for SHA-256 153c7bcbac9ad09f…

MALICIOUS

PDF

76.1 KB Created: 2021-01-30 11:42:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 689021ff35949f35e3952041d01110ea SHA-1: 23fafc6c7aa0178e5708b5c71e221450e303bf68 SHA-256: 153c7bcbac9ad09f7089f646dfcbcc260379a9f17aebebd1a4105294fd2bb3ac
154 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics, including a critical alert for linking to known malicious redirector infrastructure. The ML classifier also assigned a high probability of maliciousness. The embedded URLs suggest a phishing or malware distribution attempt, likely disguised as a product listing to entice clicks. No scripts were extracted, but the presence of malicious links is sufficient evidence of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • 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.
  • 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://yafferge.ru/123?utm_term=motofab+leveling+kit+tacoma In PDF document text
    • http://verifybadgesbusiness.com/50863167927506uf.pdfIn PDF document text
    • http://ledy66.net/99996190660hvora.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366627/normal_5fe54a492e689.pdfIn PDF document text
    • https://bolefusugo.weebly.com/uploads/1/3/4/8/134868203/pavixofojabefaxisas.pdfIn PDF document text
    • https://dotanivim.weebly.com/uploads/1/3/4/7/134705276/8c04ffb.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366331/normal_5ff51ebccf244.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426686/normal_600a584c50cda.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4480423/normal_5fc9e420d0c2b.pdfIn PDF document text
    • https://zisojuvamifofe.weebly.com/uploads/1/3/1/3/131383842/5d68516a2f2.pdfIn PDF document text
    • http://3gusevshop.space/island_warden_jobs_scotlandpvzm0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454543/normal_600a1e10aadbe.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4496602/normal_6012b89722735.pdfIn PDF document text
    • http://ita-fitness.fun/7365176427r6sos.pdfIn PDF document text
    • https://jawutasujo.weebly.com/uploads/1/3/0/9/130969833/3461832.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4379241/normal_5ff3f750141b1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387218/normal_60124f445e6d5.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000eb84.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB84 5196 bytes
SHA-256: 5e485428ee2b65b26702c697cfab46d9c8b9e6b2980a73be2b368b750be0d8a9
font_01_sfnt_off0000fd45.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD45 11720 bytes
SHA-256: 7d5f3bcd3119a7007f65e68735fb7d72c95e319551335df620f2c171dd572609

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