Malicious PDF — malware analysis report

Static analysis result for SHA-256 60c80e973a3ef62c…

MALICIOUS

PDF

78.6 KB Created: 2020-11-11 15:11:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 16a0a36093f2070f16f18d70ecfbed61 SHA-1: 1ff024fdadf9290df6f850f96475908d23d9cef7 SHA-256: 60c80e973a3ef62c0bd71f26ef08f9740f08400e3252ddfb71100152b6dc3ea9
156 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 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=all+legendary+pokemon+in+alpha+sapphire PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4393911/normal_5f9bdfca8112b.pdfIn PDF document text
    • https://wexofele.weebly.com/uploads/1/3/4/6/134632346/jubewaxi-juvekedopuv.pdfIn PDF document text
    • https://gafalevomunu.weebly.com/uploads/1/3/4/2/134235362/xolomo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393647/normal_5f9d869cdce67.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/leguvefu/bivojipadatedupajubijedam.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/75f964d6-956a-4ed2-a25e-49dc7e41ea45/lomelivebatatetorakibug.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5d8754fd-c886-4a99-918b-3d67bad82eae/dobrar_a3_abnt.pdfIn PDF document text
    • https://s3.amazonaws.com/nerugiraxura/64401839829.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/09e96264-edee-4993-87c7-dc62fdb80bd8/kasazagenolekusa.pdfIn PDF document text
    • https://s3.amazonaws.com/pomaxa/wuxuxiloxafaro.pdfIn PDF document text
    • https://s3.amazonaws.com/retobifulipo/switzerland_rail_map.pdfIn PDF document text
    • https://s3.amazonaws.com/gezetega/best_books_online_free.pdfIn PDF document text
    • https://s3.amazonaws.com/zaxawetawupo/sport_head_ice_hockey_unblocked.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c60df7e9-d5a4-463d-9441-13136fca768a/nibovolelovutifudoj.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_off0000f46e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF46E 5528 bytes
SHA-256: 297b027beba37d74bc7e87ea45734ebbc7d7f7b05023c662863a2935ee81303e
font_01_sfnt_off0001071e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1071E 11232 bytes
SHA-256: 28a33103ce92e13a039cc3540463485d19f5ae69a598b12386ee822760f7dc79

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