Malicious PDF — malware analysis report

Static analysis result for SHA-256 1aad9664a1eb9b4c…

MALICIOUS

PDF

91.2 KB Created: 2021-01-14 05:59:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 65decbbab389fcfb0d4627e981852b01 SHA-1: 010f8a06098113bdf7bd9d7aee3c801e7cb49770 SHA-256: 1aad9664a1eb9b4ca39ebcad5dc34b09f7b619cb248a6b54ea6f9c0d396450e7
214 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file contains numerous embedded links, including one pointing to a known malicious redirector. The document body, though heavily obfuscated, suggests a lure related to a 'Germany vs Argentina match report'. The presence of a link farm and a malicious redirector indicates an attempt to drive traffic to potentially malicious sites, likely for phishing or malware distribution.

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.
  • 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.
  • 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://gettraff.ru/aws?utm_term=germany+vs+argentina+match+report In PDF document text
    • https://cdn.sqhk.co/sebutarukaw/gjaieij/good_video_game_ringtones.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4485579/normal_5fc3c1947d807.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4460708/normal_5fe0bca36b3d0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365594/normal_5fd234907a8e0.pdfIn PDF document text
    • https://masogipu.weebly.com/uploads/1/3/1/6/131606875/dotora-nutulog.pdfIn PDF document text
    • https://vofepelatuj.weebly.com/uploads/1/3/4/7/134768647/4544975.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365661/normal_5fd851f72d96e.pdfIn PDF document text
    • https://cdn.sqhk.co/dawajimet/jjihatx/6478475812.pdfIn PDF document text
    • https://vubenazago.weebly.com/uploads/1/3/4/3/134357699/kunafo-raxev-kazuvizutir-januzelupaxekef.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/fopalew/instant_cleaner_pro_app.pdfIn PDF document text
    • https://s3.amazonaws.com/xulepiwa/asrb_net_admit_card.pdfIn PDF document text
    • https://s3.amazonaws.com/joterige/john_lewis_baby_sleeping_bag_size_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/nilititonawafim/attendance_tracker_template_for_students.pdfIn PDF document text
    • https://s3.amazonaws.com/midizaxopazeji/calculate_depreciation_using_balance_sheet.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001222a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1222A 5508 bytes
SHA-256: 18214eacced4156c941ca63f677fcad9e7966da0ee19cbe09bf4ab447d94d5de
font_01_sfnt_off000134cd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x134CD 13684 bytes
SHA-256: 58ee77fb9ec173e1e3a0ed6bab709ab9cc28d75067e5a09498579c04958beb1d

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