Malicious PDF — malware analysis report

Static analysis result for SHA-256 5ae3dc325812f36e…

MALICIOUS

PDF

84.1 KB Created: 2021-05-05 20:39:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-23
MD5: 89c80850c515dd05e236687c0dbe332f SHA-1: 24a164c8171191772c3c9286454739b787129317 SHA-256: 5ae3dc325812f36edd374ee163579d892c0ec901036dbd2dc4f1d7048ad48fc0
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 high likelihood of malicious intent. The embedded URLs, particularly the one pointing to 'zajinet.ru', suggest a phishing or scam attempt, likely using the 'Battle Angel Alita' lure to entice clicks. Although no scripts were explicitly extracted, the PDF structure and numerous external links are indicative of a malicious document designed to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://zajinet.ru/strik?utm_term=battle+angel+alita+anime+full+movie PDF link annotation
    • https://cdn.sqhk.co/kunimanujage/eAejc2y/72475946839.pdfIn PDF document text
    • https://cdn.sqhk.co/goremujoz/gibhaib/zinosunozonowek.pdfIn PDF document text
    • http://tarosuzaloku.22web.org/44492089513.pdfIn PDF document text
    • https://cdn.sqhk.co/mojikeke/bfWDget/rubopozuxiguxawotebubeba.pdfIn PDF document text
    • https://cdn.sqhk.co/mitukutowum/jiZ3ich/through_the_ages_game_review.pdfIn PDF document text
    • https://cdn.sqhk.co/pojimisuso/WhfjcCz/76654548955.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/mejados/joniwano.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8703c792-73c7-447f-825e-24c7fff55c6f/why_freezer_not_freezing.pdfIn PDF document text
    • https://156bb51f-0b62-477f-88ca-8620af00812b.filesusr.com/ugd/e3ff21_5e7c6b01c62744e2b2c57ef58e2146cb.pdf?index=trueIn PDF document text
    • https://fed4949e-3809-4fc0-a28b-84c5d390f589.filesusr.com/ugd/94482e_73ee6675b44844c0bc9afc6802e96f07.pdf?index=trueIn PDF document text
    • http://rabejajupo.epizy.com/assembly_in_catia_v5_tutorial.pdfIn PDF document text
    • https://d86ad34a-7df2-4f47-937b-a12ab5abc0fa.filesusr.com/ugd/8cbfce_dda3acfa70204d63b57c0f8073c8aa08.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/sowirutelevolur/najemesutoket.pdfIn PDF document text
    • http://balubusepebibi.rf.gd/servo_motor_mg995_datasheet.pdfIn PDF document text
    • https://101c3d73-5e22-4da1-a203-a3a2a794ce88.filesusr.com/ugd/69a512_8258ecc2c7924fa09445ac53439e09b6.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/9f03f304-4f28-45ed-849e-5d66b315e382/86466979762.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cec09c22-a995-488b-a3c9-b765275a374f/30091998224.pdfIn PDF document text
    • https://667abc8f-92ca-45d9-bc9d-789c80a68858.filesusr.com/ugd/dcd78f_9eff451e711e4216b368f6052d5a5b04.pdf?index=trueIn PDF document text
    • https://1e1f235d-56dd-4976-b20d-d38e3fe7b172.filesusr.com/ugd/210b45_b63c3c4b4ab04f8c8791357c5bd6449b.pdf?index=trueIn PDF document text
    • http://dijinisefiregot.rf.gd/nav_durga_aarti_song.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fd96.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD96 4248 bytes
SHA-256: cac4c967e42678880e9083d9fae3311773ac9be7d78d5d055b87ff882d41cb6c
font_01_sfnt_off00010c90.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10C90 4924 bytes
SHA-256: b67858f1313702797f387fb6644455163fb046f4101e40be25e179bf9271c2f1
font_02_sfnt_off00011d57.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11D57 11092 bytes
SHA-256: 073f3005291ab91df1d089fa90c810a8cc4da6a2afe82d66ed416d1fd3b0c650

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