Malicious PDF — malware analysis report

Static analysis result for SHA-256 2fc8770328088801…

MALICIOUS

PDF

77.9 KB Created: 2021-09-07 01:16:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-05
MD5: 6bf7cd05d24552699be8df2db3fea2f9 SHA-1: 63b144681390778ed3be33e14b59008b55644459 SHA-256: 2fc8770328088801ac4ecab4f27b3552d90e00fac395ff1d4d812f6f28b50406
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, directing users to numerous external URLs, many of which are hosted on compromised WordPress sites or disposable domains. The presence of multiple external URIs and link farm heuristics suggests an attempt to lure users to malicious content or phishing pages.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9984

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 https://garglob.ru/uplcv?utm_term=crochet+stitches+abbreviations+pdf PDF link annotation
    • https://angkalaris.com/contents//files/muxaweguzimezedak.pdfIn PDF document text
    • https://www.hagensmarketing.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bf9f49824b0---71312464461.pdfIn PDF document text
    • https://fieldofgreen.com/wp-content/plugins/super-forms/uploads/php/files/d410b9c1ee492f8f20ddbe1a29940aeb/kufasavupopudefusamizenar.pdfIn PDF document text
    • http://allegroescrow.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607cc6eba7a64---padudupopaguxemani.pdfIn PDF document text
    • http://acril.ru/ufiles/files/50029831956.pdfIn PDF document text
    • http://dynamicyunnan.com/ckfinder/userfiles/files/karim.pdfIn PDF document text
    • http://andreagarciam.com/wp-content/plugins/formcraft/file-upload/server/content/files/160f2611633f8d---pisixevufeniwopulopewusiv.pdfIn PDF document text
    • http://fanta-life.com/userfiles/file/risurututinusadekagaxatut.pdfIn PDF document text
    • http://derma-dts.de/files/file/54364160503.pdfIn PDF document text
    • https://cowichanseniors.ca/userfiles/file/nudukawotamolage.pdfIn PDF document text
    • http://rafaelokazakov.com/file/nukunol.pdfIn PDF document text
    • https://lion-trading.co.uk/wp-content/plugins/super-forms/uploads/php/files/sos58n3qsjatte5lj4tckpm41v/mipuw.pdfIn PDF document text
    • http://v-lukomorie.com/uploader/files/kijubag.pdfIn PDF document text
    • http://pusancard.com/userData/board/file/lisutasujekigi.pdfIn PDF document text
    • https://mudateconmigo.cl/wp-content/plugins/super-forms/uploads/php/files/5793342b5d040e26d2ee1d5034c120bf/31026531142.pdfIn PDF document text
    • https://atlastoursntravels.com/userfiles/file/23907463944.pdfIn PDF document text
    • http://learningkey.org/userfiles/fozobajimuvazorok.pdfIn PDF document text
    • http://aaexpansionjoint.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609cf1021df47---bifuzolizid.pdfIn PDF document text
    • http://jimsclub.net/new/board/img_tinfo/file/20210725182937.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/16089e24700fac---netumuvurexukamadazeraxod.pdfIn PDF document text
    • http://centralgiving.com/media/userfiles/file/tujejiwemovinexat.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_off0000cca1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCCA1 10908 bytes
SHA-256: b4d52c3e1440828ace837d961eb9390b468d1c4dd3c45bf09fc1e7dbeec9ca6c
font_01_sfnt_off0000e5a6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE5A6 17140 bytes
SHA-256: 385018b70cc2d75fa3d335486efc6c8febb1a07a0a0f330970972bddf296afda
font_02_sfnt_off000111c6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x111C6 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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