Malicious PDF — malware analysis report

Static analysis result for SHA-256 7457b54f3ad6bc2b…

MALICIOUS

PDF

61.1 KB Created: 2020-11-14 06:47:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: 625e638c1aade0c030334ea7e1077271 SHA-1: 405bd4e6137be87d250116039a5c1e4220c0a089 SHA-256: 7457b54f3ad6bc2b68782e5945498182eb55f9f3f96f9dcfb6a5bc4799701c00
212 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, including one identified as a malicious redirector, and is flagged by ClamAV as Pdf.Phishing.Trojan. The document body, though heavily obfuscated, suggests a lure related to a 'lost emirates id police report'. The presence of numerous external PDF links indicates a link farm, likely used to distribute further malicious content or for SEO manipulation to improve phishing campaign reach.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5435

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.
  • 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.
  • 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://gettraff.ru/aws?utm_term=lost+emirates+id+police+report In PDF document text
    • https://cdn-cms.f-static.net/uploads/4372076/normal_5f9cc9da3a76c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377924/normal_5f9270404bf3a.pdfIn PDF document text
    • https://jizonuwuko.weebly.com/uploads/1/3/0/8/130814311/kowokojig_xinepelefus.pdfIn PDF document text
    • https://mesedegusi.weebly.com/uploads/1/3/4/6/134600151/3a54c7b4def5.pdfIn PDF document text
    • https://repafajekojila.weebly.com/uploads/1/3/4/3/134305679/fokugunud.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365547/normal_5fa4035fa52c0.pdfIn PDF document text
    • https://xeveguxugagu.weebly.com/uploads/1/3/4/6/134600238/mufekid.pdfIn PDF document text
    • https://korebamo.weebly.com/uploads/1/3/0/7/130739662/9956616.pdfIn PDF document text
    • https://bedizegoresupa.weebly.com/uploads/1/3/1/3/131379398/dekegu.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000c42a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC42A 4840 bytes
SHA-256: cd2015828464316253272a858357615bec17e104482b5c377b22f20fdaf3f39a
font_01_sfnt_off0000d49c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD49C 10176 bytes
SHA-256: 9096174f78904f8620dd55685427f1bd7e25806afd335e065254d1335bab147e

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