Malicious PDF — malware analysis report

Static analysis result for SHA-256 bd064d01d8857088…

MALICIOUS

PDF

85.4 KB Created: 2021-04-03 23:32:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25
MD5: 49066cd3f87c9dcf4b30b9d41049ae45 SHA-1: 51f9f6ed38caf4b195fe1ae1af08af5d7f404684 SHA-256: bd064d01d8857088a7ca308ea659196b10e44827c1b9da67adf9e00cb3dd898a
186 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 threat. It functions as a link farm, containing numerous external URLs designed to redirect users to potentially harmful websites. The presence of embedded URLs and the 'PDF_SEO_LINK_FARM' heuristic strongly suggest an attempt to direct users to malicious content or phishing pages.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://mezovuduw.ru/award?keyword=pais+ausentes+na+vida+escolar+dos+filhos+pdf PDF link annotation
    • https://cdn.sqhk.co/puvubuzu/8hn2Fpa/bike_race_game_offline_free_download.pdfIn PDF document text
    • http://zezitil.22web.org/9172751582.pdfIn PDF document text
    • https://cdn.sqhk.co/xaxovowupofa/xrhhgii/roll_up_ice_cream_stadium_drive_kalamazoo.pdfIn PDF document text
    • https://cdn.sqhk.co/wapogade/jiHKici/ghetto_cartoon_wallpaper_download.pdfIn PDF document text
    • http://fudasoba.iblogger.org/newomekoginab.pdfIn PDF document text
    • http://rokijikin.22web.org/fernando_alonso_annual_salary.pdfIn PDF document text
    • https://cdn.sqhk.co/kimejijomaki/iccjgif/stickman_army_the_resistance_download.pdfIn PDF document text
    • https://cdn.sqhk.co/mujejadalale/oSbOPyy/gipobavoniwidive.pdfIn PDF document text
    • https://cdn.sqhk.co/lareduke/ikkmRj5/the_sims_free_play_games_download_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/xubuzivo/eoktfif/93315268401.pdfIn PDF document text
    • http://lesifipi.22web.org/national_geographic_traveler_magazine.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://99d0733d-4d0e-4d19-b238-fea6f81017ca.filesusr.com/ugd/e32e4a_b3e50b4cae774ee1b30e0cd77c79561a.pdf?index=trueIn PDF document text
    • http://koxaxinum.epizy.com/goblin_5e_character_sheet.pdfIn PDF document text
    • https://2a082fd4-e93f-4b8e-9e59-408fa046b31c.filesusr.com/ugd/e334dd_194ecf94cfc34f819e0dc0725d1fc757.pdf?index=trueIn PDF document text
    • https://b860438a-ced3-4995-86f2-ad9a24e3f15c.filesusr.com/ugd/938eb2_ee1b660d191b40da9508ca18e4397c70.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/nitizobuv/sumojo.pdfIn PDF document text
    • https://s3.amazonaws.com/jikopot/kadamban_2017_tamil_movie_free.pdfIn PDF document text
    • https://s3.amazonaws.com/daselex/jepukonaz.pdfIn PDF document text
    • https://s3.amazonaws.com/toliwudalamem/83371736180.pdfIn PDF document text
    • https://s3.amazonaws.com/numunenoji/74400869941.pdfIn PDF document text
    • https://s3.amazonaws.com/xujitezu/zotaduzokutamemuto.pdfIn PDF document text
    • https://s3.amazonaws.com/tamobalasu/mekowipalokunoregotuxaf.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_off0000fdf9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFDF9 5184 bytes
SHA-256: fd4bfd8d5bca62c54a48ecb74040288def44c6de7484dc316a7ae0b1d54aeb44
font_01_sfnt_off00010f8d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10F8D 13336 bytes
SHA-256: b3cbc62600c6447166992273933d5bd6b822f43cf688a62a2dcdc271364634a3
font_02_sfnt_off00013807.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13807 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e