Malicious PDF — malware analysis report

Static analysis result for SHA-256 1ee242df440ffbce…

MALICIOUS

PDF

44.4 KB Created: 2020-11-08 19:05:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-31
MD5: 62762394b65b5a2234e056259a6aaa58 SHA-1: 728767a77ef935694ae77617b2e4b53ae3bd6c63 SHA-256: 1ee242df440ffbce87814146c40d4ddffee152049c85e4f796779b5d9f4eb021
136 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.001 PowerShell

The PDF document contains a heuristic firing for a clipboard command execution lure, instructing the user to copy and paste content into a shell. This, combined with embedded URLs pointing to potentially malicious content, suggests an attempt to trick the user into executing commands. The primary URL identified is https://traffset.ru/123?keyword=monster+hunter+error+50382-mw1, which is likely part of a phishing or malware distribution scheme.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • Clipboard command execution lure high SE_CLIPBOARD_COMMAND_LURE
    Document tells the user to copy or paste clipboard content into Run, PowerShell, cmd, or another shell-like execution context
  • 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://traffset.ru/123?keyword=monster+hunter+error+50382-mw1 PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4378151/normal_5fa64f30c7174.pdfIn PDF document text
    • https://widobane.weebly.com/uploads/1/3/4/3/134340358/1915152.pdfIn PDF document text
    • https://wapunukipebew.weebly.com/uploads/1/3/4/4/134440940/patisoxizazod.pdfIn PDF document text
    • https://jiwepurojal.weebly.com/uploads/1/3/0/7/130775762/2085477.pdfIn PDF document text
    • https://xojexibawetu.weebly.com/uploads/1/3/4/3/134361221/6897055.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414352/normal_5f96f0c37dbff.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/henghuili-files/sabre_smoke_detector_tester.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/92d8d922-e3b6-4e09-9d2d-8179d2b3d7f0/nomijifikapugijuwed.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cab4c52c-9917-4d85-aba7-6f4e76d4e250/kabalah_aplicada.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c67f9972-5301-4940-aff8-71ff8a518649/have_yourself_a_merry_little_christmas_piano_duet_sheet_music.pdfIn PDF document text
    • https://s3.amazonaws.com/lovetijif/2783535586.pdfIn PDF document text
    • https://s3.amazonaws.com/tuzamada/71806450536.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6cac5b56-2a19-4b58-97e8-8512d8f4bd92/dinejigilovojediva.pdfIn PDF document text
    • https://s3.amazonaws.com/memul/criminal_justice_system.pdfIn PDF document text
    • https://s3.amazonaws.com/resixexi/bnficiaire_effectif.pdfIn PDF document text
    • https://s3.amazonaws.com/kijelopazekune/rowevapajerogubokadafiv.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_off00006d6c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6D6C 5620 bytes
SHA-256: eac93ce3d1a8475496861108c596540492ce5cac4f2e94bf4ab4f0c870e40461
font_01_sfnt_off00008098.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8098 10528 bytes
SHA-256: 47778a6c8b86038ffb34d6a5885bf1d45398e976760c7dfed56e1bc6dd44b7a6

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