Malicious PDF — malware analysis report

Static analysis result for SHA-256 ad1bb0cec8df07d5…

MALICIOUS

PDF

175.2 KB Created: 2021-01-15 05:09:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 1fc220fc6aebeebb9850f6496c97d047 SHA-1: db8e40dfc49cf313c49b5a458b8d553acf90b4fa SHA-256: ad1bb0cec8df07d5ae2ca91a15ed8ca407c7d6807b33f5180990bccd1a28b69e
126 Risk Score

Malware Insights

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

This PDF document is flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains numerous external links, including one to 'traffset.ru', suggesting it acts as a lure to external malicious sites. The document body, though heavily obfuscated, appears to reference '40 hadith transliteration pdf', a common lure for distributing malicious content.

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
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://traffset.ru/123?utm_term=40+hadith+transliteration+pdf PDF link annotation
    • https://fuxijisolano.weebly.com/uploads/1/3/5/3/135348953/tebovo.pdfIn PDF document text
    • https://cdn.sqhk.co/xomifinetepi/78ihheF/banana_kong_download_mod_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/tipefimex/dHjhrjg/diverse_synonyms_list.pdfIn PDF document text
    • https://cdn.sqhk.co/pivugisaxap/figezjh/76487589501.pdfIn PDF document text
    • https://site-1180442.mozfiles.com/files/1180442/best_ninja_foodi_deluxe_cookbook.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366020/normal_5feaeb5c6a63a.pdfIn PDF document text
    • https://cdn.sqhk.co/kepilujofeje/hhgaPvJ/27103211827.pdfIn PDF document text
    • https://cdn.sqhk.co/gikasiful/zgijbgc/14860797912.pdfIn PDF document text
    • https://site-1185312.mozfiles.com/files/1185312/2832109057.pdfIn PDF document text
    • https://site-1174086.mozfiles.com/files/1174086/major_lazer_light_it_up_remix_instrumental.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4415740/normal_5ff13f17a932a.pdfIn PDF document text
    • https://site-1171150.mozfiles.com/files/1171150/jelly_bean_color_personality_test.pdfIn PDF document text
    • https://site-1178687.mozfiles.com/files/1178687/jspdf_autotable_x_position.pdfIn PDF document text
    • https://vodipewelo.weebly.com/uploads/1/3/1/6/131637384/4065645.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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_005_off00027416.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x27416 34628 bytes
SHA-256: 93b5f5ca662b7a5ab04b6feb4e8d419c66ec9f9e2ea5ca688022aeed02614c00
font_00_sfnt_off00023f23.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x23F23 5264 bytes
SHA-256: 7a3a2244fa192a8a5153c5ec2f9205477d774f601519e3b14e67e6b017f3c19f
font_01_sfnt_off00025101.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x25101 10184 bytes
SHA-256: a73a119e8081ef295df4314b21e04e988f6b53c9d5ee7a8a2f9a920232af5a96

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