Malicious PDF — malware analysis report

Static analysis result for SHA-256 1c311f29c044961c…

MALICIOUS

PDF

81.8 KB Created: 2021-02-14 08:34:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8b2f53a2ce0df0088467d3463d3e39fd SHA-1: 996bd4cbae97cdd1e43b2c60be8fc2708a23b2c3 SHA-256: 1c311f29c044961ccd4c5face359cadade64cd84cb87c475de1f320231d924d5
154 Risk Score

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://yafferge.ru/123?utm_term=alabama+board+of+nursing+telephone+number` is the primary indicator of malicious intent. While no scripts were explicitly extracted, the PDF structure and the presence of malicious links strongly suggest it's designed to redirect users to harmful content, likely for credential harvesting or further malware deployment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • 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.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://yafferge.ru/123?utm_term=alabama+board+of+nursing+telephone+number
    • https://cdn-cms.f-static.net/uploads/4527357/normal_5fd1f876f2abc.pdf
    • http://everydayy.fun/44216281341rmbip.pdf
    • https://static.s123-cdn-static.com/uploads/4500895/normal_6002ed8bf0dad.pdf
    • http://zavarivaemvmeste.ru/88617530902a1fas.pdf
    • https://cdn.sqhk.co/kejofuvata/g4tjagf/queen_greatest_hits_songs_mp3.pdf
    • https://cdn-cms.f-static.net/uploads/4455374/normal_60229f4ef0b7c.pdf
    • https://cdn.sqhk.co/xiwapusumoge/ifhuASK/modern_warfare_3_weapon_list.pdf
    • https://cdn.sqhk.co/fedovipawe/3BHihji/77491198578.pdf
    • https://cdn-cms.f-static.net/uploads/4414173/normal_60214b6d35180.pdf
    • https://cdn.sqhk.co/veludewozen/hctLU01/flying_bike_simulator_apk.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/perurulexi/dafelorin.pdf
    • https://s3.amazonaws.com/wudibirewuduto/muvewubagepujag.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000101fb.bin
332fb352e087e1d50063d3f0100ad140c6c2f483e23df8a0b2abf747b219b8b7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x101FB 5584 bytes
font_01_sfnt_off000114c7.bin
d6f85d98f1b251c0a2d32d0427343f8560e2383bf57d187bba7c5bc1c354dc09		 pdf-font-stream PDF embedded font (sfnt) at offset 0x114C7 10960 bytes

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