Malicious PDF — malware analysis report

Static analysis result for SHA-256 2dd707dfd1917f9e…

MALICIOUS

PDF

65.2 KB Created: 2020-12-16 20:42:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: f7edcca8e114f71fcd8ee858511bbc92 SHA-1: 0258c15158f53f174a48b9fcfdb6f6e503767bcf SHA-256: 2dd707dfd1917f9e90a6fcaa7709c499e7890263a63e30131cb32f60ea40b1bd
156 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 it is likely a phishing or SEO spam document. It contains numerous external links, including one to 'trafftec.ru', suggesting an attempt to redirect users to potentially harmful sites. The presence of embedded links and the PDF structure point towards an attack pattern involving malicious redirection.

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://trafftec.ru/123?utm_term=britax+allegiance+car+seat+manual PDF link annotation
    • https://baletepo.weebly.com/uploads/1/3/0/7/130776023/3326568.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/pexodugosa/kenabekesexepuket.pdfIn PDF document text
    • https://s3.amazonaws.com/peveziwoguxuzam/voduwodonenutasorape.pdfIn PDF document text
    • https://s3.amazonaws.com/gomaxod/android_app_screenshot_maker.pdfIn PDF document text
    • https://s3.amazonaws.com/zijivevip/mystic_americanism.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc586c20b6b03258f54b180/t/5fd0335aa94600575876105a/1607480154757/dalegoni.pdfIn PDF document text
    • https://s3.amazonaws.com/xalasawu/23285847370.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/eefc0cb6-52b3-48a9-bbd6-a1d812e63557/brian_tooley_racing_nsr_cam.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6497c406-0c02-4461-bc65-4eb38f5d9712/ccna_voice_lab_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e37c6323-481a-4b1a-9f87-aee80a727109/nuwozo.pdfIn PDF document text
    • https://s3.amazonaws.com/nolarifaforuxop/png_background_hd_wallpaper.pdfIn PDF document text
    • https://s3.amazonaws.com/liguwubore/claudia_rankine_s_citizen.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_off0000c294.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC294 5236 bytes
SHA-256: d1d759423dea9eb760b375be61a3840c02c6f414683d4bb1b7a6d38580b7320c
font_01_sfnt_off0000d453.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD453 10624 bytes
SHA-256: ce1d9ba7b90774464254b2cc549cbb2da05eb713aa05ff94e5c60692eaad1a52

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