Malicious PDF — malware analysis report

Static analysis result for SHA-256 2e0024a3ddf65244…

MALICIOUS

PDF

77.4 KB Created: 2021-05-22 22:04:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-22
MD5: a4a673fec00c9e7ae6c591ddc2fb0e85 SHA-1: e6a99cdade8f8b09f9455014389a6d94acbdc770 SHA-256: 2e0024a3ddf65244bc0f7f0d2bea42ea3bfcdb865531c967f3c73b31d30f37d8
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 is designed to lead the user to a malicious site, likely for credential harvesting or further malware delivery. The ML classifier and ClamAV detection strongly support its malicious nature.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • 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=how+long+xiaomi+power+banks+charge In PDF document text
    • https://jadetikoj.weebly.com/uploads/1/3/5/3/135350844/sevozikutumetim_midelolevisapaz_sulinanixasiro.pdfIn PDF document text
    • https://fosogizubosa.weebly.com/uploads/1/3/1/6/131637108/331dc5a3155.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4495858/normal_606227f4ee45d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4478132/normal_604b53d367937.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/fc04d62e-3c2b-4ece-995c-cdc7be15dbf2/12_principles_of_animation_ppt.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a52e924b-ace8-4057-a35b-35c2718921bd/85129348000.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/14b4eede-1b60-4911-8208-8091f536fc8a/fijidubof.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c5a0521d-9e73-4b75-a50e-c1a43b406b1b/52288405092.pdfIn PDF document text
    • https://s3.amazonaws.com/rizoli/92859581597.pdfIn PDF document text
    • https://s3.amazonaws.com/vezumobigodub/70440204476.pdfIn PDF document text
    • https://s3.amazonaws.com/fadobirak/23064610822.pdfIn PDF document text
    • https://s3.amazonaws.com/xukonakefules/8577810846.pdfIn PDF document text
    • https://s3.amazonaws.com/makumapikeze/rewovufes.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1088f51e-d88d-4fa5-a5cc-80584de0eaa2/dewalt_table_saw_dwe7491rs_dust_collection.pdfIn PDF document text
    • https://s3.amazonaws.com/mexavofezoxi/how_to_trade_cryptocurrency.pdfIn PDF document text
    • https://s3.amazonaws.com/vuxirefare/should_you_take_the_fe_exam.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_off0000f0f5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0F5 5672 bytes
SHA-256: f66be4a85194e2bc8c4400bfb9f9e7739aee4739e28fcdb78bf3367f7e7e33bd
font_01_sfnt_off00010431.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10431 10748 bytes
SHA-256: ea2067722b26284d305e7fe620101f54afec1ce6d865c5b46a74633c060704bb

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