Malicious PDF — malware analysis report

Static analysis result for SHA-256 f38aeffa38ded8ae…

MALICIOUS

PDF

71.7 KB Created: 2021-02-17 19:10:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: d3ee5461b4497c3f9d2d0ac404537ccb SHA-1: d45665cd686f8ba03d5423360ef42a6c72719d9b SHA-256: f38aeffa38ded8ae185afa4a4f5dcf0cce04c166908f501fc9de5fa2b3f61943
162 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The presence of a link to a known malicious redirector, 'https://yafferge.ru/strik?utm_term=adobe+photoshop+7.0+shortcut+keys+list+in+urdu+pdf', strongly suggests a phishing or malware distribution attempt. The document body, though heavily obfuscated, contains references to 'wkhtmltopdf' and 'Qt', indicating it was likely generated by a tool rather than being a legitimate document. The embedded URLs are likely used to download further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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/strik?utm_term=adobe+photoshop+7.0+shortcut+keys+list+in+urdu+pdf In PDF document text
    • https://cdn.sqhk.co/berovanova/fIYiajd/rofab.pdfIn PDF document text
    • https://cdn.sqhk.co/kinubowa/fhdDOh1/dandara_trials_of_fear_apk_1._3._51.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4381297/normal_5fcc9e537ebc8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374211/normal_6020fdedc1671.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4445890/normal_60068e6c2c817.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421038/normal_602383268755c.pdfIn PDF document text
    • https://cdn.sqhk.co/niporatibu/jkjjjgo/47345218936.pdfIn PDF document text
    • https://cdn.sqhk.co/wepurodapike/de7jdja/arabic_word_samad_meaning_in_english.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4465267/normal_5ffd1ac00a324.pdfIn PDF document text
    • http://yognat.space/26955852711hbts0.pdfIn PDF document text
    • http://revershjtb.site/shesher_kobita_full_movie_downloadro99x.pdfIn PDF document text
    • http://parkji5x.xyz/4763334911083wjv.pdfIn PDF document text
    • https://cdn.sqhk.co/kozuvurop/jJ3hdjj/flip_the_gun_apk_hack_todas_las_armas.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4470825/normal_60097afe38c97.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366027/normal_5fe2738c2278b.pdfIn PDF document text
    • https://cdn.sqhk.co/borefigux/eUidEEN/59281038458.pdfIn PDF document text
    • https://cdn.sqhk.co/rizanatu/jPuu5oq/draw_in_chess_by_repetition.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://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d8ba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD8BA 5584 bytes
SHA-256: 82beea4e1b620b2df6190c99815a2d73d1374b45c664a4c7c594b422383bb139
font_01_sfnt_off0000ebca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEBCA 11120 bytes
SHA-256: 33be4ff50a9d0c22e11fb8a9e8637d890600c9b08eed76b5a8e7ad48cb657fc7

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