Malicious PDF — malware analysis report

Static analysis result for SHA-256 9383039c7dd60208…

MALICIOUS

PDF

80.4 KB Created: 2021-03-07 12:49:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-07
MD5: 4afd50383fceaf4a9055a705f7f4a28d SHA-1: 7a090af5be6b1ff95d92b1be21bd0438d8f9e2da SHA-256: 9383039c7dd60208cce5cebb858c5dde7ffa10f55eb6852d1dd1b575fb487637
186 Risk Score

Malware Insights

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

This PDF document contains numerous external links, many pointing to disposable hosting, suggesting a link farm or phishing attempt. The ML classifier and ClamAV detection strongly indicate malicious intent, likely to redirect users to malicious sites for phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and embedded URLs are indicative of a malicious document designed to exploit user curiosity.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

Heuristics 6

  • 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 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.
  • 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://kuzutuzo.ru/strik?utm_term=cateye+velo+9+installation+video PDF link annotation
    • https://cdn.sqhk.co/moradivovep/ibFGTwe/metal_slug_3ds_cia.pdfIn PDF document text
    • http://geparup.scienceontheweb.net/the_handmaids_tale_movie_1990_online.pdfIn PDF document text
    • http://nalodorepuwag.getenjoyment.net/holy_quran_english_translation_book.pdfIn PDF document text
    • https://cdn.sqhk.co/wubunepan/9QjdXge/bitbucket_old_commit.pdfIn PDF document text
    • http://labifovejes.mypressonline.com/yaesu_g-_450_xl_manual.pdfIn PDF document text
    • http://rugegav.mywebcommunity.org/twilight_saga_eclipse_full_movie_download_in_hindi_hd_720p.pdfIn PDF document text
    • https://cdn.sqhk.co/bebomopakax/gghgijg/adidas_yeezy_700_v3.pdfIn PDF document text
    • https://cdn.sqhk.co/wamamuli/jafSjc7/walizabufo.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://0e00a219-797d-4e4b-be47-f10c44a4db73.filesusr.com/ugd/89b1bc_6fb56b111ebb4f83904596d3c98e742c.pdf?index=trueIn PDF document text
    • https://cbb9655c-b60d-4095-8c1c-bb5f9a2903c5.filesusr.com/ugd/4dd980_82827eb06be54ae4bd4e3c1bbf194873.pdf?index=trueIn PDF document text
    • https://c7972686-9310-4d97-8ac3-15e828887225.filesusr.com/ugd/8a419d_28b95eee8f6e4d158c4605cbff1d8e4a.pdf?index=trueIn PDF document text
    • http://mivonovemejited.epizy.com/how_to_treat_a_baby_chick_with_a_broken_leg.pdfIn PDF document text
    • https://8a89c5bc-485b-4808-980c-66c60e8d9908.filesusr.com/ugd/834936_21c7ab1dbfd74cdfa227df269f9ca42a.pdf?index=trueIn PDF document text
    • https://add83a7c-0e31-48b3-928b-061d82ba9144.filesusr.com/ugd/205ae4_1ca57f000c0441b9977fdb2caaa0a00d.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/dujepav/fugana.pdfIn PDF document text
    • https://67d298e0-85f4-4ad4-bf36-e1ac857e42fc.filesusr.com/ugd/b6bf5b_24cc5694924b4e1ab9d2daacbb57ba9d.pdf?index=trueIn PDF document text
    • https://790985df-dfec-4a08-b509-00f37668cf87.filesusr.com/ugd/a421e3_4c5296bb28fb42b3bf2166dc1d185644.pdf?index=trueIn PDF document text
    • https://77047a80-9f17-4504-a563-a097c25ca12e.filesusr.com/ugd/5c8b2f_bb7d35f1cda64168b42af92579c982e4.pdf?index=trueIn PDF document text
    • http://kopolug.myartsonline.com/93396652933.pdfIn PDF document text
    • http://xoxigibutu.epizy.com/jituguruxeduvaxelorova.pdfIn PDF document text
    • https://s3.amazonaws.com/kibavutibeved/zuxajafusez.pdfIn PDF document text
    • http://tokipobobanokab.rf.gd/xesipetorowekusiketijir.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e58c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE58C 4948 bytes
SHA-256: 4bed8543e8620fe18297bfddcb6285302dcddb89250e543848f11a0e9c8b5237
font_01_sfnt_off0000f67a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF67A 11960 bytes
SHA-256: 0ff85fcc6026315ca630117ff6e2ec714007cb251f1a31e7fdf7950427317b64
font_02_sfnt_off00011e6a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11E6A 16160 bytes
SHA-256: b91ebbfc40a94f10b2fcfc4d08542e4cd4fc38dcff43bcfefe5d572695fcce17

Open this report in the interactive analyzer, or submit your own file for analysis.