Malicious PDF — malware analysis report

Static analysis result for SHA-256 232e59377570ab9e…

MALICIOUS

PDF

81.4 KB Created: 2020-12-21 02:48:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 5a802bd69e3112a1b35d56fa77974a7c SHA-1: 0308800d45fa28b046836c986a91befba7790a55 SHA-256: 232e59377570ab9e0bf4ab7638eb73028b54c44f647e5854e46dfca659fbf21c
244 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document contains a large number of links, many of which point to disposable hosting or redirect to malicious sites, indicating a link farm designed for SEO manipulation or phishing. The primary malicious URL identified is traffmen.ru, which is flagged as a redirector to malicious infrastructure. The document's structure and content suggest it is part of a campaign to drive traffic to potentially harmful websites, likely for credential harvesting or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://traffmen.ru/wb?keyword=premier%20league%20aerial%20duels%20won%20percentage In PDF document text
    • https://cdn-cms.f-static.net/uploads/4411219/normal_5fae661422374.pdfIn PDF document text
    • https://sadusobagobazep.weebly.com/uploads/1/3/0/7/130776682/kebari.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370055/normal_5fa492651dc74.pdfIn PDF document text
    • https://rodekimixew.weebly.com/uploads/1/3/4/3/134314341/mirusatir.pdfIn PDF document text
    • https://pewoxunoxosizix.weebly.com/uploads/1/3/4/3/134318290/7746444.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4418972/normal_5fa05b4740a4b.pdfIn PDF document text
    • https://buritovetozew.weebly.com/uploads/1/3/4/4/134486370/piboxutoj-xipuf-nugirizemo-zizameje.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367281/normal_5f8c1c01c31b7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413000/normal_5fa9cd9840974.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://s3.amazonaws.com/pusori/63097763571.pdfIn PDF document text
    • https://s3.amazonaws.com/gebukil/giremupogax.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/274c3f02-990a-4302-a938-a23d2d2f17ce/79513012408.pdfIn PDF document text
    • https://s3.amazonaws.com/vipuxafol/disadvantages_of_liberalisation_privatisation_and_globalisation.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc389629955c744b54c2322/t/5fc70786bfb90028be476e99/1606879120670/buxovekamo.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000eb5f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB5F 5368 bytes
SHA-256: 25fba83f1a1253a4ae7e02dcd3b68ec18f795e20b74a6527e0ff94f5d22787d7
font_01_sfnt_off0000fd89.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD89 13076 bytes
SHA-256: 0300eff60c94bb853ed92f96cbcc46eb74a7fdea7a1282546c1092c712d41be5
font_02_sfnt_off00012a0e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12A0E 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c

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