Malicious PDF — malware analysis report

Static analysis result for SHA-256 eb26d8d02d6825b0…

MALICIOUS

PDF

112.4 KB Created: 2021-03-20 20:30:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 0ad7940e9d13112dc37ec503fbfd72d1 SHA-1: c32a785e32ca68c5e3a08c4601dde0f777401b30 SHA-256: eb26d8d02d6825b0e97eb2790172518dcc8d4852386634b825f18544d04cfdc8
126 Risk Score

Malware Insights

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

The PDF file contains an embedded URI pointing to a suspicious domain, identified as a phishing attempt by ClamAV and ML classifiers. The document body, though heavily obfuscated, suggests a lure related to a 'range extender manual'. The presence of numerous links on disposable hosting further supports a link-farming or phishing campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9986

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://pelibifir.ru/123?utm_term=ac1200+range+extender+manual PDF link annotation
    • http://domensita.fun/how_to_synchronize_atomic_clockn49lx.pdfIn PDF document text
    • http://pukebebizadolu.mypressonline.com/let_us_commence_forth_gif.pdfIn PDF document text
    • http://watulexop.iblogger.org/relakejejuki.pdfIn PDF document text
    • http://nipawifaxupus.mygamesonline.org/71016613620.pdfIn PDF document text
    • http://jenerotisa.mywebcommunity.org/67231803640.pdfIn PDF document text
    • http://mudixefibewab.mywebcommunity.org/technical_analysis_books_in_hindi.pdfIn PDF document text
    • http://suzenax.22web.org/14537381135.pdfIn PDF document text
    • http://kartaidatodemeleri.com/the_iron_kingdom_barnsley2f5rp.pdfIn PDF document text
    • http://zivemigidefis.mypressonline.com/alif_novel_episode_12_download_free.pdfIn PDF document text
    • http://itravelimpressions.com/that_time_i_got_reincarnated_as_a_slime_light_novel_volume_1777o98.pdfIn PDF document text
    • http://fontawesome.iohttp://fontawesome.io/license/In 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/7843306a-bf87-4695-a167-08fd6cb1d1d7/18300378220.pdfIn PDF document text
    • https://53860ffb-5975-4088-b838-5c82367c2827.filesusr.com/ugd/0d2908_51b04101f0f44e4a8607a4309e3d596e.pdf?index=trueIn PDF document text
    • https://67bb8873-ca08-4da4-87c0-60a8072ebff6.filesusr.com/ugd/a838c0_30940ffe0ad14176a1a063a705e7f3f3.pdf?index=trueIn PDF document text
    • https://d99c26cc-8c68-456d-a039-1a26994c8d26.filesusr.com/ugd/105a8c_96ab5a97972946e98048bd3de456d68f.pdf?index=trueIn PDF document text
    • http://bikevobo.rf.gd/troy_bilt_pony_lawn_mower_parts.pdfIn PDF document text
    • http://bususetut.epizy.com/zajomonupobex.pdfIn PDF document text
    • http://jabejanaboz.atwebpages.com/50675636152.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8199adf5-1c09-4dfd-8085-1ff410976ec7/ulysses_alfred_lord_tennyson_questions.pdfIn PDF document text
    • http://nizalag.rf.gd/guidelines_for_htn_management.pdfIn PDF document text
    • https://9abff256-b119-4e75-a612-dfc075f5428e.filesusr.com/ugd/c73517_a9b2293709d34b44b19178aa002d16e2.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/21f94ab3-459b-4ac0-b680-ed5f0005163e/1-100_with_words.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00011707.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11707 21736 bytes
SHA-256: ed03270ae355507bd160497d2e3d80eb5d443218fcfc4cd3337097bb390590fa
font_01_sfnt_off00015a49.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15A49 1916 bytes
SHA-256: e6a60267c64cdbfca2769add204a6df4379da3c757b090af5ec30723d46c957b
font_02_sfnt_off00016385.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16385 5464 bytes
SHA-256: fb3b3698ce8a1faaafec5a08eff7bce9a95af1bc81d7d49923cc42e12a88e766
font_03_sfnt_off0001760f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1760F 11688 bytes
SHA-256: 436f5a492dc68a55510c2b1d8cd06acbbca5b1b402a9b439f2cac35046f786d4
font_04_sfnt_off00019d4f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x19D4F 16416 bytes
SHA-256: b13feff8c5b564f7677060085945be61112f8f7aeeaada995cbedf689070d2bf