Malicious PDF — malware analysis report

Static analysis result for SHA-256 2e742c62ee855a64…

MALICIOUS

PDF

47.5 KB Created: 2020-04-25 02:09:34 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6) First seen: 2020-09-07
MD5: 11a28ffb2eaa79cdf9622c5dc4c84433 SHA-1: 421a84476631b62bd9ee46b5fc851e86ac3182bd SHA-256: 2e742c62ee855a64fc436029428614e99548f80a1cddbd32b4001677d4a699a8
176 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File T1059.001 PowerShell T1059.003 Windows Command Shell T1218.011 Rundll32 T1218.010 Regsvr32

This PDF document employs a social engineering lure, instructing the user to install a browser extension or update to view content. This is a common tactic to trick users into compromising their systems. The presence of multiple external links and the heuristic firing for 'SE_LOLBIN_RUN_COMMAND' suggest that the document is designed to download and execute further malicious payloads, potentially using tools like PowerShell, mshta, cmd, rundll32, or regsvr32. The document also contains a large number of external PDF links, indicating a potential link farm or distribution mechanism.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • LOLBin token sequence in document text high SE_LOLBIN_RUN_COMMAND
    Extracted document text contains a Windows script/execution tool name (PowerShell, mshta, cmd, rundll32, regsvr32, …) within 220 characters of a dangerous flag, command verb, or URL. This is a visible 'run this' instruction in HTML/PDF/RTF lure bodies, or — in macro-laden Office files — the macro's own string-pool entries appearing adjacent in extracted text.
  • Browser extension / update installation lure high SE_BROWSER_INSTALL_LURE
    Document tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
  • 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 http://chichesterfootandankle.org/uploads/1/3/1/4/131438078/131438078.html#fight+song+piano+sheet PDF link annotation
    • http://iammichaelwillis.com/uploads/1/3/1/4/131453637/6512732.pdfIn PDF document text
    • http://twistwholesale.com/uploads/1/3/0/5/130539072/busorimajibenib-vebewutajezor.pdfIn PDF document text
    • http://loveandtheriver.com/uploads/1/3/0/5/130551219/129c350e8f034.pdfIn PDF document text
    • http://thehoebox.com/uploads/1/3/0/9/130969027/banoz.pdfIn PDF document text
    • http://hawaiiancoconuthats.com/uploads/1/3/0/5/130550868/41011792a5f8b.pdfIn PDF document text
    • http://globalreformasemcuritiba.com/uploads/1/3/0/5/130588480/nilan_jubuwaxen_guvetefitafiper_sowoge.pdfIn PDF document text
    • http://bessiestarkman.com/uploads/1/3/0/9/130969235/6405828.pdfIn PDF document text
    • http://eaoldmixon.com/uploads/1/3/0/5/130589097/9141da0e3448660.pdfIn PDF document text
    • http://falulapeacock.com/uploads/1/3/1/3/131380899/tagamukapodeki-kapibinadajoxim.pdfIn PDF document text
    • http://edlogics.org/uploads/1/3/0/6/130621310/zoxurodiwixov-tidud.pdfIn PDF document text
    • http://prgisservices.com/uploads/1/3/1/3/131398250/xewik.pdfIn PDF document text
    • https://musescore.0200000000000000004163336342344337026588618755340576171875},{In PDF document text
    • https://musescore.netIn PDF document text
    • https://musescore.jpg@150x150In PDF document text
    • https://musescore.png@300x420?no-cache=1579341305&bgclr=ffffffIn PDF document text
    • https://musescoreIn macro / runtime command snippet
    • https://musescore.musescore.1000000000000000055511151231257827021181583404541015625In PDF document text
    • https://musescore.com\rTheIn PDF document text
    • https://musescore.0In PDF document text
    • https://musescore.com%2Fuser%2F6557381%2Fscores%2F2629071In PDF document text
    • https://musescore.1In PDF document text
    • https://musescore.mid?revision=1473999054&no-In PDF document text
    • https://nocdn.com/song/fight_song-1902688In PDF document text
    • https://musescore.ultimate-In PDF document text
    • https://musescore.item-list:last-childIn PDF document text
    • https://musescore.musescoreIn PDF document text
    • https://musescore.com/static/musescore/scoredata/gen/1/7/0/2629071/b59f076993463a40a2c0ecc20ff7aac22103f27a/score_0.com/score/stats/delayed-view?score_id=2629071In PDF document text
    • https://musescore.com/user/6557381/scores/2629071In PDF document text
    • https://musescore.comIn PDF document text
    • https://musescore.youtube.com/user/21585386\rSupportIn PDF document text
    • https://musescore.com/static/public/img/musescore/piano_rollIn PDF document text
    • https://musescore.com/watch?v=L-In PDF document text
    • https://musescore.youtube.com/ug/In PDF document text
    • https://musescore.com/groups/improving-musescore-In PDF document text
    • https://musescore.com/user/6557381In PDF document text
    • https://musescore.com/user/6557381/scores/2629071/embedIn PDF document text
    • https://www.com/static/musescore/scoredata/gen/1/7/0/2629071/b59f076993463a40a2c0ecc20ff7aac22103f27a/score.com/sheetmusic/artists/ashIn PDF document text
    • https://musescore.com/static/musescore/userdata/cover/3/0/c/6557381.com/user/21585386\rSupportIn PDF document text
    • https://www.youtube.com/user/6557381In PDF document text
    • https://musescore.com/static/musescore/scoredata/gen/1/7/0/2629071/b59f076993463a40a2c0ecc20ff7aac22103f27a/In 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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008fe2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8FE2 9220 bytes
SHA-256: d2eaa63731448efe0a879d152fd13227bd8b0d96b04c8ac6be1c052d18e639a7

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