Malicious PDF — malware analysis report

Static analysis result for SHA-256 217e7cb834d6aa35…

MALICIOUS

PDF

74.7 KB Created: 2021-09-24 00:38:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-26
MD5: 302b8c374ec49af1ac5221a0a68ef3ec SHA-1: 31c82b2a0b432214c09240cdffea37df127eb4f3 SHA-256: 217e7cb834d6aa35a311e125b710aac9a8cab65b34acaca4bb5d66f354e56ffa
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by ML classifiers and ClamAV as malicious, indicating a phishing or trojan distribution attempt. It contains numerous external URIs and is structured as a link farm, with many URLs pointing to disposable hosting. The file's purpose appears to be directing users to potentially harmful websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9951

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://philabc.ru/uplcv?utm_term=how+do+i+find+a+password+on+my+phone PDF link annotation
    • https://tigapilar.com/upload/files/63354445980.pdfIn PDF document text
    • http://www.britocunhaadvocacia.com.br/home/wp-content/plugins/formcraft/file-upload/server/content/files/1613227194f967---53484308354.pdfIn PDF document text
    • http://gvs-russia.ru/admin/ckfinder/userfiles/files/91360946242.pdfIn PDF document text
    • http://jingmingtai.com/filespath/files/20210913100114.pdfIn PDF document text
    • http://refah4ter.info/basefile/hotelrefah4terir/files/fiwawi.pdfIn PDF document text
    • http://schoonhovensvrouwenkoor.nl/ckfinder/userfiles/files/26964475318.pdfIn PDF document text
    • https://orkhaconstruction.com/wp-content/plugins/super-forms/uploads/php/files/cinh90ea53b3227uuo5gtnehq1/13772067048.pdfIn PDF document text
    • http://fabiocaronearchitetto.com/userfiles/files/61456767843.pdfIn PDF document text
    • https://pmfegypt.com/userfiles/files/38050417799.pdfIn PDF document text
    • http://dmn.ca/wp-content/plugins/formcraft/file-upload/server/content/files/161348c7a91442---87821933965.pdfIn PDF document text
    • https://luckyfood.itweald.com/uploads/files/6134426b7eb94.pdfIn PDF document text
    • http://theofficefurniturestore.com/ckfinder/userfiles/files/60922298362.pdfIn PDF document text
    • http://skyrybupaslaugos.lt/uploads/files/fifirusotamevuratoxap.pdfIn PDF document text
    • http://westfallassociates.com/documents/file/kavisokupewoxinedizulupe.pdfIn PDF document text
    • https://concertwristband.com/resimler/files/85392825647.pdfIn PDF document text
    • https://bellcera.60km.com/upload/files/54274567724.pdfIn PDF document text
    • http://asude.istanbul/ck_images/files/mokipezit.pdfIn PDF document text
    • http://mopi.eu/ckfinder/userfiles/files/94493419745.pdfIn PDF document text
    • http://kojeneckezbozi.eu/userfiles/file/93282642623.pdfIn PDF document text
    • https://mk-sito.it/uploads/file/98859299440.pdfIn PDF document text
    • http://vet-spb.com/userfiles/file/45030215288.pdfIn PDF document text
    • http://a-swiss.com/upload/userfiles/file/simipexuf.pdfIn PDF document text
    • http://bndweb.nl/upload/files/tumovifinemi.pdfIn PDF document text
    • http://dayou.tw/uploadpic/files/202109212015268927.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://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_off0000bd4d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBD4D 18268 bytes
SHA-256: a992504aeaa7a1a2b2ca01b134f9d3373e22c00a2773d05ba6cf6f7be9f0843a
font_01_sfnt_off0000ec53.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC53 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0001046a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1046A 10808 bytes
SHA-256: 41c467448551f6d0fcbbb0961508b6819790491747739b60514d89d58b29ca3d

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