Malicious PDF — malware analysis report

Static analysis result for SHA-256 e7f351e14a004ae4…

MALICIOUS

PDF

79.0 KB Created: 2020-11-25 09:16:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 690e737b13a870047bbff56b3b815e94 SHA-1: d151aecd132e47148958f940657ac3356658a780 SHA-256: e7f351e14a004ae46367120ba47eb705ead5988bd96582c53d87205587d12afd
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-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://traffnew.ru/aws?utm_term=albury+tv+guide+friday PDF link annotation
    • https://kugugurufive.weebly.com/uploads/1/3/4/1/134108893/6225146.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366360/normal_5f8713aebaeb2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4389606/normal_5f932ad75f624.pdfIn PDF document text
    • https://jewuvasoseximu.weebly.com/uploads/1/3/4/3/134355154/pavefomusezubofavow.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/kopisigapub/58845105229.pdfIn PDF document text
    • https://s3.amazonaws.com/dazutun/philips_air_fryer_xxl_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b8f75676-d5f2-4846-a2d0-185b5cb3b8ef/roblox_mod_unlocked_all_items_apk.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/285558a4-6906-4d67-984d-a5e1e3e30783/34816759979.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/23df82cd-086d-456a-b22a-3ac195fd629a/72568758367.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/58638f97-e726-4c54-bd51-f36ebfcb8002/fovotodebesunamemo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bc718f69-c9b3-4bde-91cc-5e0823195a5b/mesesebav.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8e644857-df24-42e1-9610-e99bd12c3502/vojanowozuxumisa.pdfIn PDF document text
    • https://s3.amazonaws.com/jedaxopopuko/sales_and_marketing_notes.pdfIn PDF document text
    • https://s3.amazonaws.com/xukirizugukugi/free_bootstrap_template_landing_page.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6bb298d4-6ec0-473d-b6f5-38d21cea1286/20179561229.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cfd7eccf-4d40-489a-b7a3-9359b2a7a282/77715164373.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_off0000eef3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEEF3 5188 bytes
SHA-256: cabde4607bd2d301927ac1239566f11304c5af5384e7990e9c83d0156f53d409
font_01_sfnt_off000100bc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x100BC 12984 bytes
SHA-256: 4099d9771ce36694f7ac71ecf31c57c2df5b9a88e6890c2c65f7c1a9f4244d6e

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