Malicious PDF — malware analysis report

Static analysis result for SHA-256 9acd112f05cf8c56…

MALICIOUS

PDF

87.7 KB Created: 2021-07-21 13:25:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: efdd44958456b42e41a725adac2f22b8 SHA-1: 85186390bbc43d556a1d8a2b430ae82b9c105707 SHA-256: 9acd112f05cf8c56c6510bee290ca7fe36e5227078e612ba7891c0025ca469e7
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by multiple heuristics as malicious, including a critical ClamAV detection and an ML classifier. It functions as a link farm, directing users to numerous compromised websites and potentially malicious PDF files hosted on various domains. The presence of external URIs and link farm indicators suggests an attempt to lure users to malicious content, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9942

Heuristics 7

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://chptravel.ir/data/file/90344891487.pdf In PDF document text
    • http://files.ibiza-ferien.de/file/tubisadawasezi.pdfIn PDF document text
    • https://www.areatransfers.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609a329c17127---32202923174.pdfIn PDF document text
    • https://ddshower.com/ckfinder/userfiles/files/39934584881.pdfIn PDF document text
    • http://mdbim.pl/ubezpiecz/obrazy/file/89754975577.pdfIn PDF document text
    • https://gemwares.com/userfiles/file/71850862115.pdfIn PDF document text
    • https://3dreamstudios.com/wp-content/plugins/super-forms/uploads/php/files/c15b6ce0cac4b652963cfebd2b13b0db/92313315309.pdfIn PDF document text
    • http://workcoop.org/fckeditor/userimages/file/20210610150559.pdfIn PDF document text
    • http://3handseg.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606f91fb65feb---97789112448.pdfIn PDF document text
    • http://archinfo.ru/uploads/file/jipiselojewom.pdfIn PDF document text
    • http://www.gaviprintpack.com/wp-content/plugins/formcraft/file-upload/server/content/files/160876959e74ab---49993792424.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/160adba86d1f87---61384897927.pdfIn PDF document text
    • http://abnicum.ru/files/file/bizerirosutokozofalaru.pdfIn PDF document text
    • http://natproperty.com/userfiles/files/4942241218.pdfIn PDF document text
    • http://actybrain-consult.com/Upload/files/tajugek.pdfIn PDF document text
    • http://makaeximworld.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ab4d3f4225f---najexisuritefatujojuxi.pdfIn PDF document text
    • http://serendipityorlando.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608ff67215d7f---65288406787.pdfIn PDF document text
    • https://mytutr.com/wp-content/plugins/super-forms/uploads/php/files/f5fa6d9ebc1fdc261c4fcbcab67bba97/zasowedilikijepelopamuful.pdfIn PDF document text
    • https://www.vibrationmonitoring.asia/wp-content/plugins/formcraft/file-upload/server/content/files/16084c901d9515---29851519450.pdfIn PDF document text
    • http://tokyoto.pl/UserFiles/file/nekubemizularedise.pdfIn PDF document text
    • http://danangsculpture.com/uploads/image/files/sozeru.pdfIn PDF document text
    • http://tpdw.pl/userfiles/file/17634156374.pdfIn PDF document text
    • http://ilturismoinitalia.it/userfiles/files/56563001321.pdfIn PDF document text
    • https://www.eoluk.com/wp-content/plugins/super-forms/uploads/php/files/nlehconkob9gp2qvof58f28pvo/7487289276.pdfIn PDF document text
    • http://ukrainski-rosyjski.pl/userfiles/file/jezawesemuwiwipiv.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/3CAf4wW3hvY/uplcv?utm_term=i+love+you+lord+cause+your+mercy+never+fails+mePDF 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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f27a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF27A 17684 bytes
SHA-256: b0eb67e8dbdbf110f114b53bbb587ef778285aad5109eef0077ed2ba2a3d377c
font_01_sfnt_off00012041.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12041 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00013858.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13858 10772 bytes
SHA-256: 012943fd3d7d4e76d26131d9d0c2279a21b9d1e4fdad4a0e806fd05073ec7e52

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