Malicious PDF — malware analysis report

Static analysis result for SHA-256 3249e01bf4f12641…

MALICIOUS

PDF

70.1 KB Created: 2021-09-29 14:01:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: 92b871b7c40314da0229eae36c8f8dac SHA-1: 417a76fba3a5d9d074323280a1ab7b0dd8f065ea SHA-256: 3249e01bf4f12641621aef403e4f286acff7fdcc613fa2bdff15630094a29a99
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains numerous external links, with one specifically pointing to a URL that appears to be a redirector for potentially malicious content. The PDF structure and embedded links suggest a phishing or malware distribution lure, likely delivered via spearphishing.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9984

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://allytemp.ru/uplcv?utm_term=the+best+football+streaming+app PDF link annotation
    • http://palirna-frydek.cz/uploaded/file/jiriladida.pdfIn PDF document text
    • http://www.aceitunasdelguadalhorce.es/ckfinder/userfiles/files/fefuvod.pdfIn PDF document text
    • https://www.zolmedis.lt/ckfinder/userfiles/files/farurujuwodiwutadepelaxu.pdfIn PDF document text
    • http://fitnessklub-impuls.pl/uploads/assets/file/50208264014.pdfIn PDF document text
    • https://femagnet.com/upload/edu/article/file/zikaxizaref.pdfIn PDF document text
    • http://hotelbasantresidency.com/uploads/89101742194.pdfIn PDF document text
    • https://netiko.ge/img/Data/file/30597284280.pdfIn PDF document text
    • http://wahluenfty.com/userfiles/jilofogasubukiwedo.pdfIn PDF document text
    • http://cu-mbc.com/ckfinder/userfiles/files/55603678798.pdfIn PDF document text
    • http://seatraveltx.com/uploads/files/lukidojanavesa.pdfIn PDF document text
    • http://frchem.cn/upload/files/38888579976.pdfIn PDF document text
    • http://sevennews.com.br/ckfinder/userfiles/files/53894616426.pdfIn PDF document text
    • http://zawodydrwali.pl/app/webroot/userfiles/file/jetebiwidevokodugimo.pdfIn PDF document text
    • https://bodykneadstherapy.com.au/ckfinder/userfiles/files/10555847544.pdfIn PDF document text
    • https://global-brand.net/userfiles/files/zesaxuguforefop.pdfIn PDF document text
    • https://bazab.ru/ckfinder/userfiles/files/83604877751.pdfIn PDF document text
    • https://birotex.rs/images/files/dekizuvubibopet.pdfIn PDF document text
    • https://jmtours.co/aym_image/files/72611160453.pdfIn PDF document text
    • https://www.xcelsus.de/wp-content/plugins/formcraft/file-upload/server/content/files/16147f76e9d852---36459120293.pdfIn PDF document text
    • http://bawaconstructions.com/editorData/file/84285578155.pdfIn PDF document text
    • https://mashura.co/userfiles/files/nexozibasixakuxulutuxuz.pdfIn PDF document text
    • https://sikanderajam.com/Robinson/ckfinder/userfiles/files/66322651903.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_off0000b0c2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB0C2 10908 bytes
SHA-256: 9fa2fce0e5fb2cccf3260f297afee80cc275de17e6fd634ed908c9d60d327690
font_01_sfnt_off0000c998.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC998 16208 bytes
SHA-256: 0f9015587f526776e27d2c688d73616add0c9c1e6df11bbba66d94a22fa70102
font_02_sfnt_off0000f2ba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF2BA 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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