Malicious PDF — malware analysis report

Static analysis result for SHA-256 ee025026ae42ac7e…

MALICIOUS

PDF

63.9 KB Created: 2020-11-25 01:46:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 3969a1321a16be81d3d85a2237d76ccc SHA-1: e4d2c5ffff82c9f2f45af6ea61f734458ea18f6a SHA-256: ee025026ae42ac7e969ad955d1bf48886b0d646e5c019518dc6d1ac0ac71e00d
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file contains numerous external links, with a primary URL pointing to a suspicious domain that appears to be part of a link farm or phishing campaign. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware delivery. Although no scripts were explicitly extracted, the PDF structure and embedded links suggest an attempt to redirect the user to malicious content.

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
  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://trafffe.ru/strik?utm_term=gnc+live+well+pro+track+ultra+instructions PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4456699/normal_5fbbd95d24cea.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369932/normal_5f97f962a924a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416659/normal_5fbcc1718cbd2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393345/normal_5f9fc77907d51.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368477/normal_5f9347a1e5aae.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4418584/normal_5f97ae58e59b8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369499/normal_5fa12c6c2a8e5.pdfIn PDF document text
    • https://fidegobopoj.weebly.com/uploads/1/3/2/8/132815019/vilapexalenufumas.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/7a59498f-3a71-4a83-b0d5-f7536e893b03/53373803663.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d64ab4f3-c8a5-4b27-a537-ac0de96439a4/razojup.pdfIn PDF document text
    • https://s3.amazonaws.com/zomuzigo/admission_letter_sample.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/69edb630-7fa7-4279-bed5-c7efa4c91b0f/saram.pdfIn PDF document text
    • https://s3.amazonaws.com/fajetufekejo/pizonebemoruvuti.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/040fa8f4-f675-4c45-940a-adc1c9517b59/xutazawibelovu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1ebcb541-c39d-47e8-9e7c-5fb0f15a5eb3/69198183548.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ba90.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBA90 5172 bytes
SHA-256: eddb2952df02c2cf102c74fae6a51f88267aabfd494dfd621cfff75414974e96
font_01_sfnt_off0000cc52.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCC52 10720 bytes
SHA-256: 45f5ca9adf53afcf6669a9b00296bac61fb727ca039aed2fc98af19d25be85f9

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