Malicious PDF — malware analysis report

Static analysis result for SHA-256 2f23fbacb7eaac5e…

MALICIOUS

PDF

76.5 KB Created: 2021-03-29 06:53:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-22
MD5: 300bb4796357217de121ef57fab3200f SHA-1: ee63aa9b19fe1cffc80211ad696f15111041392c SHA-256: 2f23fbacb7eaac5ed2ac755ee1d6200d79efa09863c158b138915ad34a1c7b09
126 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains numerous embedded URLs, many hosted on disposable domains, suggesting a link farm designed to redirect users to malicious sites. The document body, though heavily obfuscated, appears to be a lure related to nutritional information, aligning with common phishing tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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
  • 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://druttle.ru/123?utm_term=cracked+wheat+nutritional+information PDF link annotation
    • https://cdn.sqhk.co/gesafafo/hDmT8Cm/marco_s_pizza_bowling_green_kentucky.pdfIn PDF document text
    • https://cdn.sqhk.co/nebuneduzib/5jolgeL/65816456624.pdfIn PDF document text
    • https://cdn.sqhk.co/wamamuli/hihiKjc/88670253087.pdfIn PDF document text
    • https://cdn.sqhk.co/nejijilo/mTigF7c/rufilakewuveja.pdfIn PDF document text
    • http://tekplafond.xyz/black_hole_formation_gif8ohzo.pdfIn PDF document text
    • http://zavodtriumf.com/murawusewilexakolmkx1v.pdfIn PDF document text
    • https://cdn.sqhk.co/fiwujumejuf/eifpGjb/zoxinodafe.pdfIn PDF document text
    • https://cdn.sqhk.co/sadetujadufi/cl5ITib/podafuzigomen.pdfIn PDF document text
    • https://cdn.sqhk.co/devisofage/gfhghhq/dusabusudi.pdfIn PDF document text
    • https://cdn.sqhk.co/derepinejabi/jghcwjc/76254462523.pdfIn PDF document text
    • http://winfreeiphone.xyz/lexagaxuketuwanevoms40.pdfIn PDF document text
    • https://cdn.sqhk.co/wofikubid/jahiMgf/1492687007.pdfIn PDF document text
    • https://cdn.sqhk.co/petawelesup/Mw1giib/bubble_witch_3_saga_download_free.pdfIn PDF document text
    • http://numberoone.xyz/fritzing_simulation_tutorial4mdla.pdfIn PDF document text
    • https://cdn.sqhk.co/jiloduvunilu/hhhco3D/elvis_presley_50_greatest_hits_cd.pdfIn PDF document text
    • https://cdn.sqhk.co/ludukuni/jhgieCr/sms_ringtone_download_new_tamil.pdfIn PDF document text
    • https://cdn.sqhk.co/zobelekivix/YEJjWha/wezum.pdfIn PDF document text
    • http://segway-wheelchair.ru/jokunowesutrzv39.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/89c7dbdf-ce2c-459b-8e12-b11641fa04eb/what_are_the_ranks_of_the_us_army_in_order.pdfIn PDF document text
    • https://s3.amazonaws.com/jenagubadopi/fumaliretekafafuba.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/91308852-33f1-42ae-8893-2c90a5b6d4d2/tukajedanili.pdfIn PDF document text
    • https://s3.amazonaws.com/wakuzidi/27734978825.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_off0000f002.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF002 5144 bytes
SHA-256: a7072df92d607ff52a19669c5a9b9d543352d3f4ef4fcfd99bd86241d67fe7b7
font_01_sfnt_off0001016a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1016A 10336 bytes
SHA-256: eaf29f9288ee739f9a5a83a89071eea57c6802a773b21fd40e2059a204c0b9d7

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