Malicious PDF — malware analysis report

Static analysis result for SHA-256 979013d188b1cf27…

MALICIOUS

PDF

99.3 KB Created: 2021-06-26 06:59:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-08-25
MD5: 19d94c4c2302802607408d0b965aef2b SHA-1: 429b8d4a0e8515d0a76f25e0b90ab9caca7dd36a SHA-256: 979013d188b1cf270ce400b8817eaa20a0726dbb54e91eb0706135952b08535f
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains numerous links, many pointing to compromised CMS uploads and disposable hosting, indicating a link farm designed to redirect users. ClamAV and ML classifiers confirm its malicious nature, likely for phishing or malware distribution. The embedded URLs suggest an attempt to lead users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9909

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://dgjinhak.kr/DATA/upload/files/202106060249408749.pdf In PDF document text
    • https://www.lokalesichtbarkeit.de/wp-content/plugins/super-forms/uploads/php/files/af2n48dfpc6n5ah49q3qddcg7s/nufivijoz.pdfIn PDF document text
    • https://vansuloi.com/uploads/userfiles/file/lugotovugufojake.pdfIn PDF document text
    • http://donateagift.eu/userfiles/file/jomuwado.pdfIn PDF document text
    • http://capmar.eu/userfiles/file/56992084370.pdfIn PDF document text
    • http://adance0112.com/upfile/editor/file/99657493286.pdfIn PDF document text
    • http://asianaccounting.com/admin/fckeditor/userfiles/file/dibimitowuje.pdfIn PDF document text
    • https://adsbudget.net/userfiles/file/fuviv.pdfIn PDF document text
    • https://sailstudy.in/ckfinder/userfiles/files/24785814672.pdfIn PDF document text
    • https://hotelristorantenovecento.it/wp-content/plugins/super-forms/uploads/php/files/299214f0765ef5d1757bc48cbe6dedd0/19034885284.pdfIn PDF document text
    • http://www.onegelha.com/wp-content/plugins/super-forms/uploads/php/files/d886e7e7671a364c1f709079fbe30044/74527483264.pdfIn PDF document text
    • https://www.hadlowsecurityshutters.com/wp-content/plugins/super-forms/uploads/php/files/676175ba5fa17fae39b57b0c8dcdda04/vuratopelinegezofebak.pdfIn PDF document text
    • http://www.louthadventures.ie/wp-content/plugins/formcraft/file-upload/server/content/files/1608478c2049c2---lugunigoleverurasuvu.pdfIn PDF document text
    • http://pileshoppen.dk/userfiles/file/xurevazilul.pdfIn PDF document text
    • http://argentum.com/wp-content/plugins/super-forms/uploads/php/files/4d8hmubh0ndif3vvg3r32gok3t/81448881777.pdfIn PDF document text
    • https://londonvipchauffeur.co.uk/wp-content/plugins/super-forms/uploads/php/files/7ac7f5080241e1622574ec5256ad5567/sukesuwo.pdfIn PDF document text
    • https://creativesilhouettes.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160a782c35b77f---ludan.pdfIn PDF document text
    • https://heritagelogs.com/wp-content/plugins/super-forms/uploads/php/files/9hnnosumu39sj22c8bnghr8h0g/91995377312.pdfIn PDF document text
    • https://cffcommunications.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1/1606f13ae7dd67---tuvamatazoti.pdfIn PDF document text
    • https://humanistbeauty.com/wp-content/plugins/super-forms/uploads/php/files/a9auah505ugvib9nrlkhtcqna8/faxazekamurifafegit.pdfIn PDF document text
    • https://www.bluegreenshouseboats.in/wp-content/plugins/formcraft/file-upload/server/content/files/16075c4a66bed7---51119479258.pdfIn PDF document text
    • http://sllight.ru/design/img/upload/file/pegulenopegajisofazof.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/LPIa9PGmDLg/uplcv?utm_term=charlie+hernandez+and+the+league+of+shadows+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_off00010a64.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10A64 16084 bytes
SHA-256: d11bfa2b02c462a3f9075532ce7ec1132ca3691ccd6a850e0dcf0119a218c04c
font_01_sfnt_off00011f9d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11F9D 11056 bytes
SHA-256: 3a11c6751155c1b45ac3afca0feb0fb9f343e4dff13a598d90326132b846f454
font_02_sfnt_off00013934.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13934 17152 bytes
SHA-256: 7083c1a0a2a1c8ade32eff3ff0f5640fc7b3eb13aadbbf84279482af4a7f0035
font_03_sfnt_off00016554.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16554 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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