Malicious PDF — malware analysis report

Static analysis result for SHA-256 1dbcc3c25b1791d6…

MALICIOUS

PDF

81.3 KB Created: 2021-03-03 20:00:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 6029e0857a7ab28409b8fbf6ea286b20 SHA-1: 72797af232ea9dfdca709cff284e38f536438d3f SHA-256: 1dbcc3c25b1791d641ae5232887a55b3df23c0c3be1a0efea80aa71bcd58d0d5
186 Risk Score

Malware Insights

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

This PDF file was identified as malicious by a machine learning classifier and ClamAV, indicating a high likelihood of malicious intent. It contains a large number of external links, many pointing to disposable domains, suggesting a link farm designed to redirect users to potentially harmful content. The embedded URLs and the overall structure point towards a phishing or malware distribution scheme, possibly disguised as a game modification download.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://leonvi.ru/wix?keyword=ffbe+apk+mod+global PDF link annotation
    • https://zifosugelupoz.weebly.com/uploads/1/3/4/6/134693972/9505558.pdfIn PDF document text
    • http://bagomebefekixob.getenjoyment.net/60370644052.pdfIn PDF document text
    • https://cdn.sqhk.co/lepudijazur/ZhdgdiH/download_games_bmx_boy_mod_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/nadipozow/e1jeja6/counter_terrorist_game_download_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/rojarasam/drhcXJa/dogasin.pdfIn PDF document text
    • http://kitafoged.medianewsonline.com/how_to_reset_beats_powerbeats_3.pdfIn PDF document text
    • http://lodomujimujug.mywebcommunity.org/2005_nissan_pathfinder_starter_problems.pdfIn PDF document text
    • https://kofudisefases.weebly.com/uploads/1/3/4/0/134018526/89cec53783ecc53.pdfIn PDF document text
    • http://mosuxuvemuzuwex.mywebcommunity.org/waste_king_8000_garbage_disposal_parts.pdfIn PDF document text
    • https://bawozumop.weebly.com/uploads/1/3/1/4/131452782/31e1f9.pdfIn PDF document text
    • http://newsportstechnology.ru/que_animales_come_el_oso_panda53whj.pdfIn PDF document text
    • https://cdn.sqhk.co/wukufazujuv/Pmhajjo/bimasonasiwoxomigili.pdfIn PDF document text
    • https://cdn.sqhk.co/kunimoxifagi/urhhmLR/67968304374.pdfIn PDF document text
    • http://prizinsta.info/sebuviwut217vd.pdfIn PDF document text
    • http://brumbum3.xyz/bionaire_ceramic_tower_heaterjgleg.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/vavale/60350873829.pdfIn PDF document text
    • https://s3.amazonaws.com/jazamerijekufol/waste_to_energy_power_plant.pdfIn PDF document text
    • https://s3.amazonaws.com/libusamagowuvo/blockbuster_telugu_song.pdfIn PDF document text
    • https://s3.amazonaws.com/vipuxafol/75273708986.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_off0000e926.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE926 5244 bytes
SHA-256: 58d7e413b4b7386953b6b1007e6f4cc9b04008a8880307ebf4398aa5d5c016d7
font_01_sfnt_off0000faf8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFAF8 12116 bytes
SHA-256: 9c007060d024d02f92cc779ebf5781d1fc451c56f111feee7197050d86291ee6
font_02_sfnt_off00012307.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12307 16076 bytes
SHA-256: c6524a2d53ade1d2972796857cd9d0cdd75d05276fbf5b6525631b11f4b64c81

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