Malicious PDF — malware analysis report

Static analysis result for SHA-256 c5760afd63b031ed…

MALICIOUS

PDF

93.1 KB Created: 2021-01-13 22:44:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 13c10e675d24bbf4cfbd86e2748507bd SHA-1: 91c7d3483e5342c758f015d976942da1f97fe5bc SHA-256: c5760afd63b031ed4b6ae55e3d7b87dcbebab02311d91652a179868e6e96c215
244 Risk Score

Malware Insights

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

The PDF file contains numerous links to external websites, many of which are hosted on disposable domains and appear to be part of a link farm designed to redirect users to malicious content. The document body, though heavily obfuscated, contains text related to a "Pokemon go hack tool apk", suggesting a lure to trick users into visiting these malicious sites. The presence of a malicious redirector link and the ML classifier's high confidence score further support the malicious nature of this file.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • 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 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.
  • 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://ggtraff.ru/123?utm_term=pokemon+go+hack+tool+apk In PDF document text
    • https://xubawiki.weebly.com/uploads/1/3/1/1/131163512/9591489.pdfIn PDF document text
    • https://site-1178860.mozfiles.com/files/1178860/19301362050.pdfIn PDF document text
    • https://cdn.sqhk.co/xumobopore/hjbgdjh/daludekosigimugegex.pdfIn PDF document text
    • https://komamopiragi.weebly.com/uploads/1/3/4/4/134444029/8c4a3d5b.pdfIn PDF document text
    • https://cdn.sqhk.co/zipirevofu/1He6ygY/kojivadusuvav.pdfIn PDF document text
    • https://site-1171615.mozfiles.com/files/1171615/download_game_robots_destroyer_red_siren_mod.pdfIn PDF document text
    • https://nawobelif.weebly.com/uploads/1/3/5/3/135307193/guzifa_remugoti_jitizasamofoto_woloraxatof.pdfIn PDF document text
    • https://kanupikowade.weebly.com/uploads/1/3/4/7/134717198/kizotizibak_kazop_kexej_mutuwog.pdfIn PDF document text
    • https://site-1171394.mozfiles.com/files/1171394/vawizikisemufadiwa.pdfIn PDF document text
    • https://site-1203255.mozfiles.com/files/1203255/chitrali_video_song.pdfIn PDF document text
    • https://site-1176754.mozfiles.com/files/1176754/clicker_heroes_hacked_unblocked_76.pdfIn PDF document text
    • https://site-1177584.mozfiles.com/files/1177584/hd_wallpapers_4k_for_pc_cars.pdfIn PDF document text
    • https://cdn.sqhk.co/sixepatexup/hhf1ghe/80702687870.pdfIn PDF document text
    • https://raxugujelagad.weebly.com/uploads/1/3/4/1/134108814/tizivogiti.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
    • 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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00011dbd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11DBD 4876 bytes
SHA-256: 5a22a532490ee0881144f9716688805e44e3b5e25d9c2e58a01b8c48af2c23c5
font_01_sfnt_off00012e2a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12E2A 12864 bytes
SHA-256: 6c525d40a63ecbbf209f4ebcc0a7d7b9f8ce30c8bbe9a3e5f2fc103f8c771441
font_02_sfnt_off0001579e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1579E 4324 bytes
SHA-256: ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230

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