Malicious PDF — malware analysis report

Static analysis result for SHA-256 1db0c7052a8673d2…

MALICIOUS

PDF

89.4 KB Created: 2021-02-23 06:04:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-20
MD5: d9e605c6691897733003a5b4bdf3ec1c SHA-1: 84d572bbe06f13ff33127d189c7763c70e61bb98 SHA-256: 1db0c7052a8673d293fce8f4e85310f2a6668bee644409e109dd02002de0a76d
206 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains a large number of external links, many pointing to disposable hosting services, indicating a link farm or SEO manipulation tactic. The ClamAV detection and ML classifier strongly suggest malicious intent, likely related to phishing or malware distribution. The presence of a callback lure heuristic further supports a phishing or scam-related attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 7

  • 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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://maypoin.ru/123?utm_term=positive+psychology+cbt+worksheets PDF link annotation
    • https://jerexibim.weebly.com/uploads/1/3/4/6/134654770/kafokutesal.pdfIn PDF document text
    • http://creditscoreusa.info/how_to_read_30_unit_insulin_syringe7ntc0.pdfIn PDF document text
    • https://vuzodafolo.weebly.com/uploads/1/3/4/7/134732359/pelekoterodunazutug.pdfIn PDF document text
    • https://cdn.sqhk.co/tazuxalana/idiaiiI/16315031125.pdfIn PDF document text
    • https://towizitubozabo.weebly.com/uploads/1/3/5/4/135400713/nofukisoguvunud_bonapivumew.pdfIn PDF document text
    • http://chestlune.online/gedovuwatube4gqy7.pdfIn PDF document text
    • https://cdn.sqhk.co/nujidegowupi/Jgdicjj/wallpapers_for_phone_free.pdfIn PDF document text
    • https://belexikezetuvom.weebly.com/uploads/1/3/0/7/130775063/0ddc1af52b.pdfIn PDF document text
    • http://vykupavto54.ru/cute_girl_coloring_book41wtc.pdfIn PDF document text
    • http://car-den.ru/bekezemesezejuxvqtio.pdfIn PDF document text
    • https://sutowuvo.weebly.com/uploads/1/3/4/6/134685384/8447909.pdfIn PDF document text
    • https://nusuwexob.weebly.com/uploads/1/3/4/3/134352417/26de71b.pdfIn PDF document text
    • http://zootime.store/gibupetagedeoa48n.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/fadedosi/fnb_pricing_guide_account_confirmation_letter.pdfIn PDF document text
    • https://s3.amazonaws.com/padadutiseni/balupu_songs_videos.pdfIn PDF document text
    • https://s3.amazonaws.com/xupimaral/kazumazelegivuxajilaziwis.pdfIn PDF document text
    • https://s3.amazonaws.com/fivebo/calendario_liturgico_2018_mexico.pdfIn PDF document text
    • http://gokixedotoj.epizy.com/tor_browser_mac_10._7._5.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_off00011f9b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11F9B 5444 bytes
SHA-256: 0bddd6ce03c57f1d740c53b941e6df874ca925fc4befd60793790768b96abd88
font_01_sfnt_off0001323b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1323B 11752 bytes
SHA-256: 38c8cbc241ca8ea3ac90d344b09285778fc5fabb010038fc3a1ed83b864c0dcd

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