Malicious PDF — malware analysis report

Static analysis result for SHA-256 f480bed7eba259e0…

MALICIOUS

PDF

75.1 KB Created: 2021-02-20 20:12:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-12
MD5: 61bb08bcc407e6c8bfdd05380dd47e94 SHA-1: 24114a7a74f78b6e862c01f04a229cc573548f30 SHA-256: f480bed7eba259e0928cde94144a51c050d5bc93de812b8f37ca86ac08f1e8ad
184 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics as malicious, including a critical alert for linking to known malicious redirector infrastructure. The document body, though heavily obfuscated, appears to contain references to a service manual, likely a lure. The numerous embedded URLs, many pointing to disposable hosting or link farms, strongly suggest a phishing or spam campaign designed to redirect users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://crophysi.ru/strik?utm_term=hp+stream+11+pro+g5+service+manual In PDF document text
    • https://static.s123-cdn-static.com/uploads/4487192/normal_5fe381f799d7e.pdfIn PDF document text
    • https://cdn.sqhk.co/dawadetugas/klQaghP/17832164572.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4501777/normal_5fd147946d19d.pdfIn PDF document text
    • https://cdn.sqhk.co/kefexunas/6ZBIicH/sujufagupibugade.pdfIn PDF document text
    • https://cdn.sqhk.co/tivinarafuvu/7PieOge/light_up_birch_trees_room_decoration.pdfIn PDF document text
    • https://cdn.sqhk.co/dogutadova/cYQUZjn/25167100390.pdfIn PDF document text
    • https://cdn.sqhk.co/sigidezok/Oaibjdn/65880049734.pdfIn PDF document text
    • http://mobevusujezuno.22web.org/wotaxebozemolakodiz.pdfIn PDF document text
    • https://cdn.sqhk.co/busosuwik/UI0CbYK/rifiju.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369633/normal_602930307927f.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://padijajuvon.rf.gd/85344956364.pdfIn PDF document text
    • http://zumosupol.epizy.com/80286743501.pdfIn PDF document text
    • https://s3.amazonaws.com/tudawufed/dean_martin_sway_piano_sheet_music.pdfIn PDF document text
    • http://ravuxigud.epizy.com/gaming_pc_building_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/wobuzisibal/94135211124.pdfIn PDF document text
    • http://sevawudefogu.rf.gd/properties_of_aluminum_alloys.pdfIn PDF document text
    • http://tijepexaran.epizy.com/what_to_read_after_thrawn_trilogy.pdfIn PDF document text
    • http://wipidomi.rf.gd/67444033072.pdfIn PDF document text
    • http://xepadegi.epizy.com/drip_irrigation_system_project.pdfIn PDF document text
    • https://s3.amazonaws.com/wivunonovef/best_images_ever.pdfIn PDF document text
    • https://s3.amazonaws.com/wenobagupexekap/banjara_video_songs.pdfIn PDF document text
    • https://s3.amazonaws.com/nitatotol/vamefadowujenevulojeke.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e62d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE62D 5448 bytes
SHA-256: fe3de5d4a7a4fa61d2fc3dbb8b9157a590ba1707be9733cb037eeefb06db1e5f
font_01_sfnt_off0000f8b5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF8B5 11240 bytes
SHA-256: a5b2fa85f020eb67fc4372aa753a76e60433076f79782a18dd1637b076e8b03e

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