Malicious PDF — malware analysis report

Static analysis result for SHA-256 2be7bb60f592deee…

MALICIOUS

PDF

76.3 KB Created: 2021-03-06 21:16:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 26e27db16b944acda49ee2f5fa9bec99 SHA-1: 1f05de0831deb2d7c62c2d438538f505ca2cdf1c SHA-256: 2be7bb60f592deee46eea6a7bb69a0b7d2ae0160f0ee208debecac0d0051ee86
126 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ML classifiers and ClamAV, indicating a phishing or trojan payload. It contains an embedded URI pointing to 'baarspo.ru', which is likely a malicious domain used to host or redirect to the actual payload. The document body, though heavily obfuscated, contains text suggesting a lure related to 'Numenera pdf collection'.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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 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.
  • 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://baarspo.ru/wix?keyword=numenera+pdf+collection PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4365624/normal_603557339ca49.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4473642/normal_6001919c3fa5c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481819/normal_6028212e077d6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408321/normal_602e363585d71.pdfIn PDF document text
    • http://luwogexejel.getenjoyment.net/how_to_make_chicken_jerky_with_dehydrator.pdfIn PDF document text
    • http://xagigusutop.iblogger.org/bosch_500_series_dryer_manual.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4380393/normal_5ff1d75395c5d.pdfIn PDF document text
    • http://zexaribamemavi.sportsontheweb.net/ace_personal_trainer_exam_price.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/6e4e379a-211d-4222-964a-2420433b7b59/serta_motion_essentials_iii_adjustable_bed_base.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/83e4256e-b103-4f37-b859-1eb895e3f60d/72149934864.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/73c846da-2e63-4be6-b43f-171aa8e696c4/what_about_law_book_summary.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/87a7481f-1072-4f85-92a3-cae121ff4d54/53647700912.pdfIn PDF document text
    • http://luxupuxud.myartsonline.com/xuzog.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c1dd2db5-19c2-429f-8095-1b2c1086f381/betajitifapar.pdfIn PDF document text
    • http://tugoxejemikoze.epizy.com/braid_pc_game_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/79a20352-a872-4b58-8c4a-b1f51d26f1b0/50779234530.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a88dd0d1-1bdd-4c2e-9d42-b914f90b2bc2/sofuwara.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0000edbf-8be8-4faa-9ffc-12c6fde3ae1e/51292627615.pdfIn PDF document text
    • http://xewipevi.rf.gd/your_song_piano_sheet_music_c_major.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3b971512-666a-40b4-b502-a9543a9aa6bf/9752144959.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f1774d60-c9e4-4c95-add7-f66813da068c/79797095609.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0c2dceb3-1ffc-4c6b-9168-b21d80a06fe4/naruzemejimuzu.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_off0000efa3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEFA3 5092 bytes
SHA-256: 8ec0b4403792571509e2687b2017ed568fa846316c12b625b9127c5859baac1b
font_01_sfnt_off000100e5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x100E5 10220 bytes
SHA-256: 6589be902a7f45f829b8ea448ba24191abb5de36f67c3321ca2fdc91f9efb4a9

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