Malicious PDF — malware analysis report

Static analysis result for SHA-256 2bd20ff489ca1071…

MALICIOUS

PDF

69.7 KB Created: 2020-11-25 13:28:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 06c8c0e4fca263276b142ad82f646686 SHA-1: 9166e3148e016efd56323a8d0db49644e30a7f8d SHA-256: 2bd20ff489ca1071b7cbee60001d35009aabbfcc96f5de5db1ba4977de7a2994
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 identified as malicious by ClamAV and an ML classifier, indicating a phishing or trojan threat. It contains a large number of external links, suggesting a link farm or redirection mechanism. The presence of a URL pointing to 'trafffe.ru' with a query parameter related to 'gta 5 apk game download' strongly suggests a lure for potentially unwanted or malicious software downloads.

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://trafffe.ru/123?utm_term=gta+5+apk+game+download+mob.org PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4415530/normal_5fa114e4d0af1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373259/normal_5f8a411d078c5.pdfIn PDF document text
    • https://tekegalesi.weebly.com/uploads/1/3/0/7/130740489/pevizipujalum_foref_wuwaxalusas_kedizaxe.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369915/normal_5f9f70ca84d04.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4453328/normal_5faac9662611e.pdfIn PDF document text
    • https://janejamav.weebly.com/uploads/1/3/4/8/134887015/60439629ebc.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/59babd97-a7c4-4cbb-88d4-c2f8aa311baa/compaia_de_comicos_que_actuaban_en.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/087cb024-ff86-4085-bf6c-8bc494c77d3d/guide_to_edible_plants.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a3e13f72-6ec0-4330-9e28-df3ed8c1271d/gujoruxamewupiwobufelam.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7e577b44-94a1-47e1-9589-7d39c440faf2/dividonugov.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2a9bc0b2-cd62-4016-b36d-4b9e0f4ca326/25372251088.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2d6504b6-242b-4da0-8472-b9722e7c184d/29866009819.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_off0000d305.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD305 5584 bytes
SHA-256: 6f01c5db80a23cd8ab609e05b4c55a85b4bd4eba6e372df80b52abbf895cf94f
font_01_sfnt_off0000e60a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE60A 10608 bytes
SHA-256: 4c580e87e45198f6f9ade3dfb2d03160defe2ea11fd57eedcbb01ecc53ed98df

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