Malicious PDF — malware analysis report

Static analysis result for SHA-256 4fa30316655f9e2a…

MALICIOUS

PDF

86.8 KB Created: 2021-09-17 15:08:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: ad8cd00507523f3d8246fa98a442023a SHA-1: f3229eabf5780287fb080155f43b36ca26907ea4 SHA-256: 4fa30316655f9e2a00b938354ca6fe2789939ba9637b79d0a7bcd9ee8690bf53
186 Risk Score

Malware Insights

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

This PDF document exhibits characteristics of an advance-fee scam and callback phishing lure. It contains numerous links to potentially malicious PDF files hosted on various domains, suggesting a link farm designed to distribute further malicious content or redirect users to phishing sites. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or trojan distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9976

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
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • 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 http://transcash.com/ci/userfiles/files/ratamijekesamumolarobabiv.pdf
    • http://michelschuurmans.nl/images/uploads/file/gamupabebosuwobutotigik.pdf
    • http://spartaksedlec.cz/spartaksedlec/userfiles/file/vometofebibewuxidow.pdf
    • http://www.vitrierbxl.be/wp-content/plugins/formcraft/file-upload/server/content/files/16135849c2852e---18053677087.pdf
    • http://hanifeugur.com/image/files/jijaxafi.pdf
    • https://mar3ol.com/Files/files/1564925395.pdf
    • https://fivetc.net/uploads/files/15380389595.pdf
    • http://ndfeef.com/radiant/mechimobiles/userfiles/files/82727287370.pdf
    • https://padservhosting.com/userfiles/file/81449346704.pdf
    • http://xn--e1aazeoc7d.xn--p1ai/images/shared/file/84361843507.pdf
    • https://noukos.gr/wp-content/plugins/formcraft/file-upload/server/content/files/161442b6ad53d6---reximifenizat.pdf
    • http://yogo110.com/userfiles/file/dofanawad.pdf
    • https://sharjahcements.com/images/bulk_images/files/11834735854.pdf
    • http://royal-pizza.eu/files/file/gisivadabapagoneg.pdf
    • http://www.trisad.kz/ckfinder/userfiles/files/96218403507.pdf
    • http://tutek.eu/userfiles/file/xutugarulidufujelono.pdf
    • https://norservis.com/files/files/segowiwagolakakimuxas.pdf
    • http://ingatlantv.tv/userfiles/files/5204798971.pdf
    • https://albertoangel.sinecsas.com/ckfinder/userfiles/files/xuzulak.pdf
    • http://ambvetbrashersclavoghisu.eu/userfiles/files/3661910813.pdf
    • https://acavacecio.it/userfiles/files/fuwabixoluwokanofikuwudug.pdf
    • https://profix.fr/ckfinder/userfiles/files/47220628159.pdf
    • http://praguynakorn.com/praguynakorn/picture/datapro/files/61991679827.pdf
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/BvfzZFkJO3s/uplcv?utm_term=phone+alarm+app+android
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000efc8.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEFC8 16792 bytes
font_01_sfnt_off000107df.bin
07b35fce4c21ebaf53185e0e5318514c6d93beda35e3cf4481159b16d4e81b51		 pdf-font-stream PDF embedded font (sfnt) at offset 0x107DF 10392 bytes
font_02_sfnt_off00011f09.bin
58ef1a5b48b877170a0b821ce969052867682af9bab242f8e1afd825012da175		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11F09 17844 bytes

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