Malicious PDF — malware analysis report

Static analysis result for SHA-256 006fda36ad99bdbc…

MALICIOUS

PDF

67.8 KB Created: 2020-12-18 07:12:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: 49c3af9585a0a50a3a16764132eb8918 SHA-1: 910f3fe32af2d8c20531528104d3ca0bea218541 SHA-256: 006fda36ad99bdbc594ce79275e59cbdf95a8c4705574cdc39133d77e9bd4f6d
186 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

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 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.
  • 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.
  • 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://trafffe.ru/strik?utm_term=aura+kingdom+duelist+guide PDF link annotation
    • https://xojerajap.weebly.com/uploads/1/3/1/3/131384359/b4c259a16fe1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377128/normal_5f8f8df76f7c0.pdfIn PDF document text
    • https://tawedituja.weebly.com/uploads/1/3/4/8/134864040/wajez_mitaxolefax.pdfIn PDF document text
    • https://luzofimufabo.weebly.com/uploads/1/3/4/5/134590143/4878858.pdfIn PDF document text
    • https://jupisururixed.weebly.com/uploads/1/3/4/3/134339091/samodobo.pdfIn PDF document text
    • https://ketezujozak.weebly.com/uploads/1/3/4/7/134744557/mapid.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382780/normal_5faffd5e0ee2f.pdfIn PDF document text
    • https://letateworu.weebly.com/uploads/1/3/4/3/134365764/towopafibakus.pdfIn PDF document text
    • https://wejusapud.weebly.com/uploads/1/3/4/6/134614256/gakimobopagotoko.pdfIn PDF document text
    • https://fakimodixoto.weebly.com/uploads/1/3/0/7/130739088/c590e.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/c255603b-6be6-455e-8be2-1c92f5f41f3e/68824098215.pdfIn PDF document text
    • https://s3.amazonaws.com/davolazupivowi/capello_cr60_clock_radio_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/13b0e6af-a446-4a74-aacc-3a0f1d0bdb50/free_online_hyundai_repair_manuals.pdfIn PDF document text
    • https://s3.amazonaws.com/fapaga/la_sangre_de_cristo_letra.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_off0000cb75.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCB75 5200 bytes
SHA-256: 903a1e44134ffd944afaf7169976766ca2b8f716786e6277a1835f1fb7886723
font_01_sfnt_off0000dd0d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD0D 11084 bytes
SHA-256: 89268b13cff53b19ce54fcb14a8266a049ec44f1714efabfa17a10c5c29715f6

Open this report in the interactive analyzer, or submit your own file for analysis.