Malicious PDF — malware analysis report

Static analysis result for SHA-256 654865c7821cf300…

MALICIOUS

PDF

67.8 KB Created: 2020-11-22 09:09:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: e4de4bd105dbc3b368047e28ac6eee7a SHA-1: e21d3eda2694a53b2a46196a239babc9a16cf4d8 SHA-256: 654865c7821cf300f1f42b3933d6c4c0c9c7d65ef925eba818b2462765c1d6bf
186 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 multiple heuristics and an ML classifier, with ClamAV detecting it as a phishing trojan. It contains a link farm with 28 external links, many pointing to disposable hosting, suggesting a phishing or malware distribution campaign. The primary URL, 'https://trafffe.ru/aws?utm_term=broiler+farming+project+report+5000+birds', indicates a lure related to a project report.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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.
  • 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/aws?utm_term=broiler+farming+project+report+5000+birds PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4377931/normal_5f8e5de3e75a2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4486522/normal_5fb96f4adfa0a.pdfIn PDF document text
    • https://pevinuwipe.weebly.com/uploads/1/3/0/8/130873962/8022475.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4407066/normal_5f98e21044d87.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4401711/normal_5f9cf2da8f823.pdfIn PDF document text
    • https://naxedomabaxa.weebly.com/uploads/1/3/1/6/131606472/pesuje.pdfIn PDF document text
    • https://bunofavaluz.weebly.com/uploads/1/3/4/6/134661637/jajidare-xajanilunivu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4389376/normal_5f91c052c8713.pdfIn PDF document text
    • https://jolefopasovoja.weebly.com/uploads/1/3/4/4/134402584/kesemari.pdfIn PDF document text
    • https://dolujutizividev.weebly.com/uploads/1/3/4/8/134864897/jexaxopotadetubu.pdfIn PDF document text
    • https://tovozilulu.weebly.com/uploads/1/3/0/8/130873983/bodemodefese.pdfIn PDF document text
    • https://nutolifawivu.weebly.com/uploads/1/3/1/4/131437776/kalugexexedipep.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/af0f6b04-88bd-40c2-a3b6-5378e1e7498d/complaint_letter_hotel_template.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/552d1f83-5bd9-4d7a-b5a5-e0193646cb04/guxiwuzubiwefinawanakez.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000bba1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBBA1 5796 bytes
SHA-256: 7323196511cb44b4f02d6a327c135a4ef2d83ce93c138c3f2ce81b666bb73fe8
font_01_sfnt_off0000cf31.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCF31 10848 bytes
SHA-256: b6d657631530107396aefb17a58b3a80f41c8b4a4d74a88a8ccc54aaf85dad47
font_02_sfnt_off0000f3ee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF3EE 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2

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