Malicious PDF — malware analysis report

Static analysis result for SHA-256 faf62236162c2506…

MALICIOUS

PDF

84.7 KB Created: 2021-01-11 08:00:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 2ada85630b4528f1888f15e8b998cfa9 SHA-1: dd80df28284c7cac078ad1d410216695833061aa SHA-256: faf62236162c25064240ce4e55236bae0b795dda887460b6e20a717fb1e12ce0
154 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains a link to a known malicious redirector, indicating a phishing or malware distribution attempt. The embedded URL `https://cctraff.ru/aws?utm_term=mac+os+cheat+sheet` is flagged as malicious by heuristics. The document body, though heavily obfuscated, suggests a lure related to a 'Mac OS cheat sheet'. The ML classifier and ClamAV detection strongly support a malicious classification.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://cctraff.ru/aws?utm_term=mac+os+cheat+sheet In PDF document text
    • https://cdn-cms.f-static.net/uploads/4367922/normal_5f87854278cf8.pdfIn PDF document text
    • https://site-1199436.mozfiles.com/files/1199436/nokiv.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383678/normal_5fb7acbf757b0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374954/normal_5f8d07f35c584.pdfIn PDF document text
    • https://site-1221861.mozfiles.com/files/1221861/evolutionary_psychology_research_examples.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4493545/normal_5fb4ea45bc945.pdfIn PDF document text
    • https://site-1083884.mozfiles.com/files/1083884/89635583925.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369189/normal_5fcd42a13aad2.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/dezajok/bollywood_movies_2012_free_mp4.pdfIn PDF document text
    • https://s3.amazonaws.com/badodemebo/gafinudominidiv.pdfIn PDF document text
    • https://s3.amazonaws.com/topipovikapari/property_investment_analysis_report_sample.pdfIn PDF document text
    • https://s3.amazonaws.com/gopuze/96989422303.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ec95.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC95 4400 bytes
SHA-256: aabb8d01f0c299631e603c9353dc163f1312e6aa9c8241f66156151f2c52395c
font_01_sfnt_off0000fb82.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB82 10928 bytes
SHA-256: ff49dd6c875e3103b4ba90f346a7060537f3b581788a0cdf84d3e22360e5bc3c
font_02_sfnt_off00012116.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12116 16576 bytes
SHA-256: 7c858ef0efcea3d58f698924bf64d24bd8f8863d9139fa3934f03736345d7315
font_03_sfnt_off00013783.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13783 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3

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