Malicious PDF — malware analysis report

Static analysis result for SHA-256 192267077606f2d1…

MALICIOUS

PDF

75.2 KB Created: 2021-09-08 09:46:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-05
MD5: 0b382950945419010a62447eb309a806 SHA-1: de7f38c0f90c1c3058e6d9a85b94a0645a55f083 SHA-256: 192267077606f2d13a32901b843dc445061be644e34131d2cce775a1727810b6
156 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. It functions as a link farm, containing numerous URLs that point to compromised CMS uploads and disposable hosting sites, likely intended to redirect users to malicious content. The presence of multiple external URIs and a link farm structure strongly suggests an attempt to distribute further malware or conduct phishing attacks.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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 https://gospel-streams.com/asset/ckfinder/userfiles/files/jubobijarerinemaretilimur.pdf In PDF document text
    • https://cashmeredreams.com/wp-content/plugins/super-forms/uploads/php/files/a1fdc64b8284b36efe8ad6bd02c3b9c7/30818428177.pdfIn PDF document text
    • http://bmcnx.com/userfiles/file/30420029914.pdfIn PDF document text
    • https://colakcivi.com/userfiles/file/30880293411.pdfIn PDF document text
    • http://salonlomi.pl/wp-content/plugins/formcraft/file-upload/server/content/files/160727348796c2---2570926266.pdfIn PDF document text
    • http://xn--80aesyq.xn--p1acf/files/file/ritetu.pdfIn PDF document text
    • https://bliznacite.com/files/78304180718.pdfIn PDF document text
    • http://www.garriagricola.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609ce88c25dd9---melikasedosetukafelo.pdfIn PDF document text
    • https://www.numberoneporthill.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1606fa01281e7b---migizotapikibuzenesutow.pdfIn PDF document text
    • https://donnasalon.ru/wp-content/plugins/super-forms/uploads/php/files/78aa937ccbc80c98d7f167ca29f433db/dosisalunevametulevoroli.pdfIn PDF document text
    • https://www.harasportcenter.com/wp-content/plugins/super-forms/uploads/php/files/a2jnj3qg6l1h1gpm8a0f0qg7bt/19639012636.pdfIn PDF document text
    • https://jairdefreitas.com/ckfinder/userfiles/files/kaledazumulara.pdfIn PDF document text
    • https://toptenstudy.com/upload/files/BodyFile__60ECABE3EEEAE.pdfIn PDF document text
    • https://formapolis.it/wp-content/plugins/super-forms/uploads/php/files/35d9ac7a441a31d82c16eed5e4ffbda4/sipibol.pdfIn PDF document text
    • http://www.sunarpazarlama.com/wp-content/plugins/super-forms/uploads/php/files/sfc1fr9bskfvlqasggff0ip0s6/74537587281.pdfIn PDF document text
    • https://xn-----6kcabagcgfjsxjciriy6alkh6a7aqk.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/ec27a49d55e1a861046bffa98a15448d/fimox.pdfIn PDF document text
    • http://aptekarynek.pl/zdjecia/fck/file/pedibuxilatarokodutisowuk.pdfIn PDF document text
    • http://tgtech-auto.com/userfiles/file/gavezevoneno.pdfIn PDF document text
    • http://kingsap.com/file_media/file_image/file/gumesorawopabo.pdfIn PDF document text
    • http://101-games.ru/images/uploads/files/42216920411.pdfIn PDF document text
    • http://computerdoki.hu/user/file/59612760924.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/3CAf4wW3hvY/uplcv?utm_term=periodic+table+families+worksheet+answer+keyPDF 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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c1fe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC1FE 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000da10.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA10 16672 bytes
SHA-256: f3ea58708ac2da6e5a299750afa9097c95a6fbc06b019e4af9d0eed98f6c284a
font_02_sfnt_off00010523.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10523 11172 bytes
SHA-256: 1e9cfc1a4e3a547995616df39b3100cca11ef9bca685c0335fb1d9107aad5fd9

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