Malicious PDF — malware analysis report

Static analysis result for SHA-256 a92766ace72b32df…

MALICIOUS

PDF

67.1 KB Created: 2020-12-19 12:53:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 580f1c820bcfc3eeefb2172bd4b84286 SHA-1: c5f510fbd9b0d2ec64fec04e1fdeaa864ad51619 SHA-256: a92766ace72b32dfdb927dd375c5b63dea1d19664d9a22c291b368842dd6cfab
134 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF file was flagged by multiple heuristics, including a critical ClamAV detection and an ML classifier indicating maliciousness. It contains numerous external URIs, with one pointing to 'traffking.ru', suggesting a phishing or malware distribution attempt. The PDF's structure and the presence of external links indicate it is likely part of a campaign to redirect users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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 is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://traffking.ru/aws?utm_term=dale+bala+song++mr+jatt PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4410216/normal_5fbbbbeed1037.pdfIn PDF document text
    • https://xulejodamujodu.weebly.com/uploads/1/3/4/7/134771271/27ae0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371244/normal_5fa21b02c77ad.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373259/normal_5f8c7afe214b1.pdfIn PDF document text
    • https://vodipewelo.weebly.com/uploads/1/3/1/6/131637384/fuvitu.pdfIn PDF document text
    • https://tanezogifa.weebly.com/uploads/1/3/4/3/134321065/227700fda251d8.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4464861/normal_5fccb3cb4a1bf.pdfIn PDF document text
    • https://tobadagagu.weebly.com/uploads/1/3/4/7/134750152/xisuto-xovig.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/6df117e9-82db-42cb-ab94-5138ca2f4a2f/mewak.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/436c158b-7515-40bd-9515-14babc206d25/80486943527.pdfIn PDF document text
    • https://s3.amazonaws.com/fizaxo/59915556714.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e6fd43d8-e85b-497c-94e9-3b70945ec4b6/cuanto_es_120_grados_fahrenheit_en_centigrados.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1fe0b1eb-e719-4e3d-bb16-b230d07f77d1/stepper_motor_datasheet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a711cad3-4fb2-417e-bfc7-6000c80b8bdf/39772664706.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/057fcd8f-0ef9-4c0e-bcb7-61d1bf19b12a/33515161087.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

Related samples 8

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

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b292.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB292 5220 bytes
SHA-256: 5cbe4706d749d8bb7f251cf32e99ea0e9cfed8e9c5c39c220acb62b10d0ef0ee
font_01_sfnt_off0000c449.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC449 10460 bytes
SHA-256: 6602c046963a00711eb9cac492be540d3e607d0b0dddab24426ef2029ee94ed0
font_02_sfnt_off0000e841.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE841 16164 bytes
SHA-256: 2fd1dce33673603bec60934d465eaef6f02a8f61a5564b105bb09aab7a5b770f

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