Malicious PDF — malware analysis report

Static analysis result for SHA-256 07a0eadaa357e49d…

MALICIOUS

PDF

104.5 KB Created: 2021-02-19 18:50:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: a81fb05f0660fb920e70ae12c7db7919 SHA-1: 60870c5611b36ec478060358fdf318e8de6d96d7 SHA-256: 07a0eadaa357e49d11f245cc0fdf7682c555acc0872b01d85b9337eb3debbdd4
156 Risk Score

Malware Insights

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

The PDF file contains numerous external links, identified as a link farm, with one prominent URL leading to a site offering a 'final cut pro x tutorial download free'. This suggests a phishing or scam attempt, leveraging a seemingly legitimate offer to entice clicks. The ClamAV detection and ML classifier further support its malicious nature, classifying it as a phishing trojan.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://jottigo.ru/aws?utm_term=final+cut+pro+x+tutorial+download+free PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4366015/normal_5ff226ff1ede7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426423/normal_602efa037b7ab.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4370072/normal_5fc94b6aae66e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4476446/normal_5ff538ff601e2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393180/normal_600d7caf097f5.pdfIn PDF document text
    • https://bomejafir.weebly.com/uploads/1/3/4/7/134725936/87b184dbb21da.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4457604/normal_60080963e00c8.pdfIn PDF document text
    • https://cdn.sqhk.co/pasivuzuke/uyAihji/dinghy_boat_for_sale_philippines.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4460055/normal_5fe245303ee57.pdfIn PDF document text
    • https://cdn.sqhk.co/gitopedevid/HibtJk3/the_ultimate_prepper_s_survival_guide.pdfIn PDF document text
    • https://pagajunudew.weebly.com/uploads/1/3/5/9/135992687/xubof.pdfIn PDF document text
    • https://cdn.sqhk.co/navimoxa/eaia7jK/hawthorn_bank_belton_mo.pdfIn PDF document text
    • https://cdn.sqhk.co/nogawevorus/cHUjjYT/blacksmith_hammer_set.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/diwitapezu/daily_mail_crossword_answers_13th_june.pdfIn PDF document text
    • https://s3.amazonaws.com/belapawerezuju/29232254044.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00014582.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14582 5084 bytes
SHA-256: 2c4fdff8c44259ae8c318df95188988b2cdd329c8d2e4c1e7da1eda9c4654d17
font_01_sfnt_off000156f8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x156F8 12880 bytes
SHA-256: d5771066ecf5ace8828011bd173df926b1a9fe2b67024bdccf3436e4e4d71d35
font_02_sfnt_off00017fc5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x17FC5 16064 bytes
SHA-256: 723e6034cfa8adeebabcb44fcd9a81d05c7492831ad3e7dd1a7a87e114838b67

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