Malicious PDF — malware analysis report

Static analysis result for SHA-256 192113bb891fe8b1…

MALICIOUS

PDF

65.0 KB Created: 2020-12-22 02:56:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: f4b5a760b1094eea899f69708cd522c5 SHA-1: b7b0136a542a6bc93a96669f749d976231732cec SHA-256: 192113bb891fe8b1af39fa848445673098e52049308ee4970fd3db26fa555370
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://traffine.ru/strik?utm_term=pro+car+simulator+2020+hack PDF link annotation
    • https://fusefediwotedi.weebly.com/uploads/1/3/4/5/134589876/ac421.pdfIn PDF document text
    • https://moxitimufetumo.weebly.com/uploads/1/3/4/0/134040580/5039157.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387925/normal_5fb68a0ac5b35.pdfIn PDF document text
    • https://xisiwazebisa.weebly.com/uploads/1/3/4/7/134758569/4111619.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4455176/normal_5fc5729a72d48.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/248b1206-ab5b-4949-8781-0d5cd07f6e5d/firujokaza.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbcf3a38bc8713fe6fcd840/1606218659385/as_seen_on_tv_pillow_side_sleeper.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/76e528a9-1aa1-4113-8324-eec015cd0fe7/what_does_ie_insured_escrow_mean.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/beef429c-f814-4208-ac49-428689f1a8e5/formato_para_pago_de_pasaporte.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bcda5eb0-afbf-4e29-a7aa-f27b6881b432/perawebezifuvalekifaju.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2977f53a-c3ad-488d-9415-d8118f4641ba/girl_stop_apologizing_discussion_guide.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0c162085bf90c0efc5341/t/5fc1a7953c6ccf69f39c5c44/1606526870148/13109337894.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bf80156d-8284-4a61-bd13-1bae616776af/99324854558.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c13157f4-f16a-479c-b7a8-f4b48c46384b/motejitaduzal.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_off0000c118.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC118 5380 bytes
SHA-256: 8c4e1bd7c2f4c36eece0e9e9f3f5d60ca991f83f938df6cb7f9ed147dfa4ef08
font_01_sfnt_off0000d333.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD333 10996 bytes
SHA-256: 4912afd35b8d5e9b624efc157b988a14bf3e046fa4829300d79de428e11eef8c

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