Malicious PDF — malware analysis report

Static analysis result for SHA-256 46dc70dff3a2eb6a…

MALICIOUS

PDF

69.5 KB Created: 2020-12-24 01:26:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: e31ea37b4df8084fd0e00486ae85cf38 SHA-1: 9e36efd4bb58376be9347377b7f5fc8db850d6d6 SHA-256: 46dc70dff3a2eb6ad2fb3be711ea86477f484e16950f73856177a4d70eabd08c
154 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://traffmen.ru/strik?utm_term=mother+earth+cali+creamin+calories'. This URL is the primary indicator of malicious intent, likely serving as a lure for phishing or to download further malicious content. The ML classifier and ClamAV also strongly indicate maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • 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.
  • 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://traffmen.ru/strik?utm_term=mother+earth+cali+creamin+calories In PDF document text
    • https://static.s123-cdn-static.com/uploads/4500692/normal_5fe03abc75405.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4446283/normal_5fcd1c5bc7f35.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381762/normal_5f99ecb5d5ffb.pdfIn PDF document text
    • https://sugelazo.weebly.com/uploads/1/3/4/7/134767002/jekoxakeguvex.pdfIn PDF document text
    • https://rulomegujenuguv.weebly.com/uploads/1/3/4/3/134329868/pamudibonogonud-puzepiwi-fadolup-namovijager.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/4641fc6a-7ad1-455e-ae7e-64286209772f/59651300376.pdfIn PDF document text
    • https://s3.amazonaws.com/regufojalojaza/shatta_wale_melissa_mp4_video.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/edadb992-9baa-4359-bf32-c73148667b69/kevabezodaxinaka.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/88ae5bc3-9f83-4cd7-b9de-58842ffb7034/66071536971.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d3028df2-3d92-4af8-8bad-71612d22d9cb/wiritukubafago.pdfIn PDF document text
    • https://s3.amazonaws.com/watajive/49596357323.pdfIn PDF document text
    • https://s3.amazonaws.com/jolunenafobuw/buzegimefuza.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/101919ed-2d5e-4b40-be8d-4c0fab59e48d/62480033310.pdfIn PDF document text
    • https://s3.amazonaws.com/xotomisen/bandhan_all_song_bengali.pdfIn PDF document text
    • https://s3.amazonaws.com/wixamupelinere/9227319298.pdfIn PDF document text
    • https://s3.amazonaws.com/duzexefemosaxe/harry_potter_5_free.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_off0000d24b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD24B 5044 bytes
SHA-256: 3b6c5178a0656a2793542c85de354ca65cd7a1aa291f33611d790be62b79a639
font_01_sfnt_off0000e34b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE34B 11188 bytes
SHA-256: baa9363207f7f408a27d5990f758c31d66acc70ebccba3bfdee09adc04e76d98

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