Malicious PDF — malware analysis report

Static analysis result for SHA-256 e10d49547af17747…

MALICIOUS

PDF

80.5 KB Created: 2021-09-22 18:20:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-16
MD5: 6a1dbe3aecb14580ce2cbc88de3d5c02 SHA-1: 3ac5dbaaabe764412d8a024a4634f729b015f11f SHA-256: e10d49547af177476fa2de7f99cdd405c7a67a6d3a7502508ef74013d4e11ab0
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF file was flagged by ML classifiers and ClamAV as malicious, indicating a phishing or trojan payload. It contains numerous embedded URLs, many pointing to disposable domains, suggesting a link farm designed to redirect users to malicious content. The presence of a feedproxy.google.com URL, while benign, is part of the redirection chain.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9968

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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 http://mos-craciun-inchiriere.ro/fckfiles/file/lulozobiwewukolib.pdf In PDF document text
    • http://harchovyk.com/userfiles/file/12613890519.pdfIn PDF document text
    • http://bischofs-scheune.de/userfiles/file/vitururalobipixemalur.pdfIn PDF document text
    • http://divyabodhanam.org/userfiles/file/mibufefunobo.pdfIn PDF document text
    • http://anipetkingdom.com/webroot/img/files/panarugigu.pdfIn PDF document text
    • http://heyumpnd.com/userfiles/file///wodotirobalufedi.pdfIn PDF document text
    • https://ice-group.pl/userfiles/file/82057417884.pdfIn PDF document text
    • http://studiolegalezullo.eu/userfiles/files/5081370584.pdfIn PDF document text
    • http://weiddy.com/uploads/files/202109041027372340.pdfIn PDF document text
    • http://kenshopvn.com/uploads/files/bujufogub.pdfIn PDF document text
    • http://npi-management.org/ressource/site-image/files/wuzanozipakasuwif.pdfIn PDF document text
    • https://bartonsteel.com/tony/barton/ckfinder/userfiles/files/78243811549.pdfIn PDF document text
    • https://brunoamaranti.it/wp-content/plugins/super-forms/uploads/php/files/u94rgldqmkka360rvnmai89s32/wimupomulegasabuj.pdfIn PDF document text
    • http://assotechne.eu/userfiles/files/jojawufofomanawavamemov.pdfIn PDF document text
    • http://bellamy.tw/uploads/files/202109091757452177.pdfIn PDF document text
    • https://eklyps.net/images/file/jitamif.pdfIn PDF document text
    • http://spl-designs.com/ckfinder/userfiles/files/fubasisoz.pdfIn PDF document text
    • https://jck.ro/userfiles/file/tajusomaviwomorokimulag.pdfIn PDF document text
    • http://nikkenj.com/userfiles/file/wejejibilowutewe.pdfIn PDF document text
    • http://www.pattyn360.com/upload/forum/files/sozozenetikegamuwe.pdfIn PDF document text
    • http://aromaonly1.com/yamituki-n/uploads/files/52688616677.pdfIn PDF document text
    • http://futurepoolandspa.com/ckfinder/userfiles/files/xigava.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/fzgW7-mxBc0/uplcv?utm_term=why+i+cannot+download+app+from+play+storePDF link annotation
    • 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://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_off0000d601.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD601 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000ee18.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE18 11080 bytes
SHA-256: 773a503dba51efc1ef0422d41474bcd7c17c991fba5b1ea303eefed371d6227c
font_02_sfnt_off000107d5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x107D5 17432 bytes
SHA-256: 0a2b53174cfa3db526dc4145462af4e42f591c3c80e9f6c40d25455f3ae9ed62

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