Malicious PDF — malware analysis report

Static analysis result for SHA-256 cd75d2ca686e6b18…

MALICIOUS

PDF

67.5 KB Created: 2021-09-24 19:59:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-19
MD5: 946e26df3721ff3bc21fa5f4c4dfa628 SHA-1: bd73fbf77a772e862979db89d30994ba33281d37 SHA-256: cd75d2ca686e6b18e606dd86411bcf19519f83e6d108ae1e63fe5fd457d1d79a
164 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9952

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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://pistant.ru/uplcv?utm_term=happy+men%27s+day+date PDF link annotation
    • http://haiqi-machine.com/d/files/novefikojudajawuw.pdfIn PDF document text
    • http://drairtools.com/ckfinder/userfiles/files/xidivotilojezadenarugit.pdfIn PDF document text
    • http://www.dawnrotaryclub.tw/UserFiles/files/direxavafanu.pdfIn PDF document text
    • http://gdwtechnology.com/fckeditor/file/wugevajamijuzab.pdfIn PDF document text
    • http://burningspearmarketplace.com/js/ckfinder/userfiles/files/wajukulobasoxevisira.pdfIn PDF document text
    • https://hometutorsdelhi.com/userfiles/files/towugudipirebuseju.pdfIn PDF document text
    • http://loaamtran.vn/files/usersfiles/files/71783782448.pdfIn PDF document text
    • https://istanajp.net/contents/files/ditonegetivimasa.pdfIn PDF document text
    • http://dywin.com/uploadfile/files/pusufekuganolifib.pdfIn PDF document text
    • http://sayarbobinaj.com/file/jivugalaparejorevem.pdfIn PDF document text
    • https://riverasphotovideo.com/wp-content/plugins/formcraft/file-upload/server/content/files/16149b28e62e3c---52569647941.pdfIn PDF document text
    • http://medical-1669.com/userfiles/files/40257294146.pdfIn PDF document text
    • https://pmsp-me.com/userfiles/files/15496350770.pdfIn PDF document text
    • http://ericshartman.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/50824350960.pdfIn PDF document text
    • http://iphonedown.com/ckfinder/userfiles/files/18854204806.pdfIn PDF document text
    • http://oletrans.sk/editor_uploads/files/68728787809.pdfIn PDF document text
    • http://posuni.com/userfiles/file/63881973727.pdfIn PDF document text
    • https://brawlcall.jordanadams.com/ckfinder/userfiles/files/62249426753.pdfIn PDF document text
    • https://www.femregenx.co.za/wp-content/plugins/super-forms/uploads/php/files/n88s8kqcq7gtrppjkjcsf001o6/liderisoledogukugow.pdfIn PDF document text
    • http://espicycooking.com/files/file///21293185812.pdfIn PDF document text
    • http://vibrosystem.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1614924539bbb2---kemebotawopamuxaxi.pdfIn PDF document text
    • http://bergfin.se/wp-content/plugins/formcraft/file-upload/server/content/files/16140bc03df329---refilolinijuxopa.pdfIn PDF document text
    • https://ip-kamera-rendszer.hu/ckfinder/userfiles/files/44866934211.pdfIn PDF document text
    • http://michellenevinracing.com/FCKeditor/file/nukalivos.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_off0000ae08.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAE08 10332 bytes
SHA-256: 1edd2359e818195e564143ae1223657694e49c5a8e5ab01349d7e8cd20888a9a
font_01_sfnt_off0000c55d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC55D 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0000dd6f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD6F 14552 bytes
SHA-256: 990d40c457c0ed0db62df860218db9af236818e9cba22ba5c89d49acbbc3c78d