Malicious PDF — malware analysis report

Static analysis result for SHA-256 2dd32ecb01f0502e…

MALICIOUS

PDF

175.6 KB Created: 2020-11-11 02:47:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 6fc5e62f06160e7dfeb5f140e61781ef SHA-1: b6d9f1365bc0814793cc99175840f0e40ffbc719 SHA-256: 2dd32ecb01f0502e52f9259fbb330505d6e01aa51ea1b6a94c39737ae8de665b
184 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF file was flagged as malicious by a machine learning classifier and ClamAV, indicating it contains malicious content. It embeds a link to `gettraff.ru`, which is identified as a known malicious redirector. The document body, though heavily obfuscated, contains text related to geographic words and application metadata, likely serving as a lure. The presence of embedded URLs and the malicious redirector link strongly suggest an attempt to phish or redirect users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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
  • 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 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://gettraff.ru/123?keyword=geographic+words+starting+with+a In PDF document text
    • https://jarapitoxedomel.weebly.com/uploads/1/3/1/4/131437170/c3b047.pdfIn PDF document text
    • https://lixaworone.weebly.com/uploads/1/3/1/8/131871871/d2f1016926b4.pdfIn PDF document text
    • https://majizozu.weebly.com/uploads/1/3/4/5/134598595/tuwewube_dazakani.pdfIn PDF document text
    • https://gamupizesusaza.weebly.com/uploads/1/3/1/3/131398140/xodulunezuvuwedun.pdfIn PDF document text
    • https://gubaxefu.weebly.com/uploads/1/3/4/5/134592394/dekigulonawo-fibag-lelepokatizum.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383916/normal_5f92ed0e65bb8.pdfIn PDF document text
    • https://tuvonozesafuk.weebly.com/uploads/1/3/4/6/134600303/dizib_wewojudebuwifur_nakowobotuw.pdfIn PDF document text
    • https://fofafobef.weebly.com/uploads/1/3/4/3/134349457/towalologegojim.pdfIn PDF document text
    • https://lodirunesu.weebly.com/uploads/1/3/0/8/130874391/nesasovigene-vepolirujota-gejiwotiv-xonejo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366633/normal_5f87d2d8e40f5.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/murudute/62301739899.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/31c033a4-ce05-45aa-be9c-0ce29bae864a/low_trust_factor_csgo.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_off00027663.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x27663 5424 bytes
SHA-256: efe9b8b82dac357c39c652fdd3f2f310a4e6cd537249c8bfb3860b37084e8fa5
font_01_sfnt_off000288e8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x288E8 12000 bytes
SHA-256: 7065d8827e2cc525ca17a6a5a2c8aca6bee64d3538a6b6d48475448059fb16e6

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