Malicious PDF — malware analysis report

Static analysis result for SHA-256 364434211135d958…

MALICIOUS

PDF

69.1 KB Created: 2021-01-12 06:09:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 4896395260bd52494b0fd89e2e95e1bd SHA-1: 0a5460f1fbd20ce52dbfe9f858d2092b06efdaf7 SHA-256: 364434211135d958f3f84e2eed37513be24d3c2d72bbe959e8b31d123e088173
156 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 a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains a large number of external links, many of which are likely part of a link farm designed to manipulate search engine results or redirect users to malicious sites. The presence of embedded URLs and the PDF_SEO_LINK_FARM heuristic strongly suggest this document's purpose is to drive traffic to potentially harmful destinations.

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://traffine.ru/123?utm_term=poodle+skirt+era+makeup PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4414342/normal_5faacf6931df0.pdfIn PDF document text
    • https://cdn.sqhk.co/mewobonovagi/98cuhfM/kontrabida_in_english_dictionary.pdfIn PDF document text
    • https://rurezakofone.weebly.com/uploads/1/3/1/1/131163981/c4ed7f8f17.pdfIn PDF document text
    • https://site-1168150.mozfiles.com/files/1168150/dreamline_enigma_shower_door_parts.pdfIn PDF document text
    • https://site-1171687.mozfiles.com/files/1171687/40259877315.pdfIn PDF document text
    • https://site-1174383.mozfiles.com/files/1174383/igt_slot_games_for_pc_download.pdfIn PDF document text
    • https://vaxedokumam.weebly.com/uploads/1/3/4/2/134266394/c3cbf37362928e6.pdfIn PDF document text
    • https://cdn.sqhk.co/kevejonob/yVqjg13/luvirokubuvarisu.pdfIn PDF document text
    • https://site-1203132.mozfiles.com/files/1203132/acpi_ven_hpq_dev_0004_treiber.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/pazifetanegapu/gigi_brazilian_waxing_kit_near_me.pdfIn PDF document text
    • https://s3.amazonaws.com/nademopor/poweredge_r730_rack_server_spec_sheet.pdfIn PDF document text
    • https://s3.amazonaws.com/pazerogasarinu/rinafelan.pdfIn PDF document text
    • https://s3.amazonaws.com/gosete/criticism_of_bureaucratic_management_theory.pdfIn PDF document text
    • https://s3.amazonaws.com/zuwosil/housework_chores_worksheet.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

Related samples 8

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

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d27c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD27C 5172 bytes
SHA-256: 831b52cd222785d685da55d067e27662677d0f6010f218e66491c43a43069dc7
font_01_sfnt_off0000e3f9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE3F9 10476 bytes
SHA-256: 0d0cfb10586f80518d70ef4907a9342988d79d00beb386e19216f9116b9696ad

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