Malicious PDF — malware analysis report

Static analysis result for SHA-256 269536fcbe862d25…

MALICIOUS

PDF

72.2 KB Created: 2021-02-18 14:25:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 7bae3b3d0a4fe83b1c47494866d63083 SHA-1: e8b4b0a18425e1dc6d41c6097af2386508ddf124 SHA-256: 269536fcbe862d25fd42724c925b9bf26f7ead85637fd871fb06b53cfcc2c0a7
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF document is identified as malicious by ML classifiers and ClamAV, indicating it's a phishing or trojan delivery mechanism. The document body, though heavily obfuscated, suggests a lure related to 'Quran English translation PDF'. The presence of numerous embedded URLs, including one pointing to 'seumenha.ru', strongly suggests the document is designed to redirect users to malicious sites, likely for credential harvesting or further malware distribution. No scripts were extracted, but the PDF structure and URL heuristics are sufficient to infer a phishing attack pattern.

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://seumenha.ru/123?utm_term=quran+english+translation+pdf PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4370528/normal_5fc612ee23fe2.pdfIn PDF document text
    • https://cdn.sqhk.co/xuxumududu/1FgjjgM/wovodilaf.pdfIn PDF document text
    • http://pusokum.66ghz.com/nobel_video_song.pdfIn PDF document text
    • https://cdn.sqhk.co/kisesawaropo/ggjjfhj/26843573187.pdfIn PDF document text
    • http://maxist.ru/bagivqqirh.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4487007/normal_6024b4265836b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386824/normal_600a58b515557.pdfIn PDF document text
    • http://qrastenmap.online/bnz_first_home_withdrawal_forml8sk1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4489061/normal_60212ecb51b17.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4482418/normal_5fc9f8d8dd769.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4455890/normal_6002d248e6020.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://dojidusajotat.epizy.com/59786171969.pdfIn PDF document text
    • http://pakoxerevigere.epizy.com/susimukizesipomowuxed.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_off0000dda2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDDA2 5364 bytes
SHA-256: e61e4e50e4b93b9c82411c47fe991ad7b81db50a8618424b3b2aeba7717d0a02
font_01_sfnt_off0000efd9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEFD9 10608 bytes
SHA-256: 45c584e138ef14e94ebbe89490dd43136b06580b7dd17ca868d3112e84cbb4b9

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