Malicious PDF — malware analysis report

Static analysis result for SHA-256 a252d81c6112f842…

MALICIOUS

PDF

87.2 KB Created: 2021-09-04 09:06:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-17
MD5: ca6d8540eea8313e8ddae6df3bc2337e SHA-1: 0563470cba702e5514b82ece71ac4801da1b494b SHA-256: a252d81c6112f84261bbbf54f1a00e173f2b6d19b49da2c60be934f017b707af
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The file is identified as malicious by ML classifiers and ClamAV, specifically as a phishing trojan. The PDF contains numerous links, many pointing to compromised websites or disposable hosting, suggesting a phishing or redirection scheme. The presence of external URIs and link farms indicates an attempt to lead the user to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9956

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://shlawllc.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/titirabedejor.pdf In PDF document text
    • https://www.urban-quartz.co.uk/wp-content/plugins/super-forms/uploads/php/files/04331bc933f0a1126ed530fbe6ed7aff/kidibovexugupopanekivoguv.pdfIn PDF document text
    • http://fixafilm.se/userfiles/file/23047989689.pdfIn PDF document text
    • http://www.airportlimofortlauderdale.net/wp-content/plugins/formcraft/file-upload/server/content/files/16092c05a5b606---17628681451.pdfIn PDF document text
    • http://olsztyntransportmedyczny.pl/userfiles/file/62117032678.pdfIn PDF document text
    • https://tiemhoamo.com/data/dulieu/files/xikinorixedarekuwezelofes.pdfIn PDF document text
    • http://modelkyujin.com/wp-content/plugins/formcraft/file-upload/server/content/files/160763c964acba---97017031787.pdfIn PDF document text
    • https://drsubhashawale.com/ckfinder/userfiles/files/26554104498.pdfIn PDF document text
    • http://uticachemical.com/files/upload/files/58189365840.pdfIn PDF document text
    • http://crystalsteakandstogie.com/clients/1/1d/1dbb6d5698303b6304ae84622e226a19/File/pilujape.pdfIn PDF document text
    • https://dildendilecevirievi.com/upload/ckfinder/files/xudovifixajadodataduliwos.pdfIn PDF document text
    • https://harpethvalleypto.org/wp-content/plugins/super-forms/uploads/php/files/bf02826cbbf1e9814e129d2cafaa8301/zomam.pdfIn PDF document text
    • http://isotech.si/uporabnik/file/wivoso.pdfIn PDF document text
    • https://indolabtek.com/Uploads/userfiles/files/noperezinekibi.pdfIn PDF document text
    • http://wisewood50th.com/clients/3/35/35ca2b70ae131fa39667c240906a3fe4/File/wejuxu.pdfIn PDF document text
    • http://myhomeinparis.com/userfiles/files/99456159403.pdfIn PDF document text
    • http://shinex-auto.com/userfiles/file/xovej.pdfIn PDF document text
    • http://www.redactordecontenidos.eu/wp-content/plugins/formcraft/file-upload/server/content/files/160774c8dd313d---89844797248.pdfIn PDF document text
    • http://on-video.com/movies/movie_data/file/vezumebajazaloxejizoxuja.pdfIn PDF document text
    • https://lacaune.hu/userfiles/file/92068611225.pdfIn PDF document text
    • https://mosoptagro.ru/wp-content/plugins/super-forms/uploads/php/files/fe03d67267415bb712b20cc7728776db/70774608624.pdfIn PDF document text
    • https://seataclighting.com/wp-content/plugins/super-forms/uploads/php/files/17ab32c39e2c29dd60a658f5ba052dea/gapilesodorugedaramu.pdfIn PDF document text
    • http://www.vikingmaterials.com/img/jafavumozudirevar.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/Om9ozkHLxGw/uplcv?utm_term=freetexthost+quotidiani+pdfPDF 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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cd14.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCD14 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000e526.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE526 21804 bytes
SHA-256: 683244554cec40de37d9745d0df03f16820e549546b5fde1a1de34d97c07108c
font_02_sfnt_off00011dce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11DCE 16340 bytes
SHA-256: 52dd5067e004a5093f19d447f9e7e67fb382ccd5a9785c067e4d8a9ce714e481
font_03_sfnt_off00013428.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13428 10876 bytes
SHA-256: 8084b157732d6bff5312533525307cfc0696762805bda7248f2aeeba23ecb790

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