Malicious PDF — malware analysis report

Static analysis result for SHA-256 9894b43cacd5c485…

MALICIOUS

PDF

78.1 KB Created: 2021-03-31 02:02:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2d549d963af230b5fe638dca35b7f3d2 SHA-1: b05d589259e257f2174e59fb9554636f0958bb48 SHA-256: 9894b43cacd5c485f6c8b3deb6877da2d76a82ef57cf0e1d161ee9334a4c6b08
156 Risk Score

Malware Insights

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

This PDF file is classified as malicious due to its extensive use of external links, characteristic of a link farm designed to redirect users to potentially harmful content. The heuristic 'PDF_SEO_LINK_FARM' indicates a high volume of links, suggesting an attempt to manipulate search results or distribute malware. While no scripts were directly extracted, the presence of numerous external URLs, including one flagged as potentially malicious, strongly suggests the PDF's purpose is to act as a lure for further malicious downloads or phishing attempts.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

Heuristics 5

  • 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.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://xajibur.ru/strik?utm_term=what+child+is+this+sheet+music+pdf
    • https://cdn.sqhk.co/wefonasifaza/Qjg1hjl/revigenuzo.pdf
    • https://cdn.sqhk.co/buxifuludo/fggjbrH/move_to_ios_app_review.pdf
    • https://dijitisabotiji.weebly.com/uploads/1/3/5/3/135324222/4869200.pdf
    • https://cdn-cms.f-static.net/uploads/4475219/normal_605847b23158b.pdf
    • https://static.s123-cdn-static.com/uploads/4478146/normal_5fca84ffbac49.pdf
    • https://cdn.sqhk.co/nulupitet/Mecjjij/cool_math_games_2048_hack.pdf
    • https://cdn-cms.f-static.net/uploads/4368731/normal_604b4d02b24da.pdf
    • http://lilisejujope.iblogger.org/dubidewawomewesinuso.pdf
    • https://cdn.sqhk.co/wirumedaba/ioBhfhg/swing_sets_lowest_price.pdf
    • https://cdn.sqhk.co/sobekalob/QhgifU2/funny_videos_tik_tok_pakistan_2019.pdf
    • https://cdn.sqhk.co/kufagilan/iibYiaV/lulaxuriven.pdf
    • https://bemogipe.weebly.com/uploads/1/3/4/3/134379528/7226276.pdf
    • https://nusiteraj.weebly.com/uploads/1/3/5/3/135347212/9272938.pdf
    • https://cdn-cms.f-static.net/uploads/4462056/normal_603c872ddc950.pdf
    • http://lisifakus.66ghz.com/ielts_speaking_makkar.pdf
    • https://nurafotupitu.weebly.com/uploads/1/3/4/4/134495453/2d76271454772d1.pdf
    • https://cdn.sqhk.co/givefugonuw/hF1zBge/morevuwixu.pdf
    • https://cdn.sqhk.co/godivago/IgeNBie/nagujulirunakugibinuz.pdf
    • https://cdn.sqhk.co/nenakowi/wIDyFgj/sivami.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • http://fogalefudomuj.epizy.com/26878269102.pdf
    • https://uploads.strikinglycdn.com/files/705def90-670f-427d-970b-87efcbba6fbf/twilight_breaking_dawn_part_2_full_movie_in_hindi_download.pdf
    • https://uploads.strikinglycdn.com/files/bcd6a967-6076-42b2-82be-762abae25a72/wahl_clipper_guards_uk.pdf
    • http://pebulibupa.rf.gd/54449761168.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e452.bin
4aadd02a3e7b5026b9442463e3141201837b127a63a0382c04f4130e9c6faa15		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE452 4980 bytes
font_01_sfnt_off0000f554.bin
8ed6424f6c2702b9fc906fe2be2ccb865df31741b5778fa732411ef6775b5192		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF554 11536 bytes
font_02_sfnt_off00011cd2.bin
d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11CD2 4324 bytes

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