Malicious PDF — malware analysis report

Static analysis result for SHA-256 f2e735acb784fc87…

MALICIOUS

PDF

94.5 KB Created: 2021-09-13 11:01:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-24
MD5: a3003a4eb171f7ac91c37068207e178e SHA-1: 974c480c75bd8d847fa6217d290d63309a62d4da SHA-256: f2e735acb784fc877fdc79e44e8bc6d6e4b7a3342030be3e48c6ff8deeeb9b79
134 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript, which is a common technique for exploiting PDF vulnerabilities or delivering malicious content. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' indicates a large number of external links, suggesting a phishing or redirection attempt. ClamAV detection as 'Pdf.Phishing.Trojan' further supports the malicious nature of the file.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9977

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
  • 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 http://tianlanlawyer.com/filespath/files/20210908193354.pdf In PDF document text
    • https://www.davidwoodpersonnel.com/wp-content/plugins/formcraft/file-upload/server/content/files/16137491a5a4d1---87406337963.pdfIn PDF document text
    • http://www.mananthavadynorbertines.org/www/js/ckfinder/userfiles/files/waropufusibidemo.pdfIn PDF document text
    • http://caramelitos.sk/files/sumepogob.pdfIn PDF document text
    • https://www.poolsrus.com.au/application/third_party/ckfinder/userfiles/files/60664343295.pdfIn PDF document text
    • https://cakesandcupcakes.net/userfiles/files/figeki.pdfIn PDF document text
    • http://dermatologomiguelgallego.com/miguel/fck/file/vaxonagatomajofuguxigeme.pdfIn PDF document text
    • https://proxus.nl/file/67858461520.pdfIn PDF document text
    • http://etkindenetim.com/resimler/files/jadomusokal.pdfIn PDF document text
    • http://seidels-mineralienwelt.de/images/uploaded/file/sezezijunavivituzud.pdfIn PDF document text
    • https://ssekolkata.com/ckfinder/userfiles/files/85261381262.pdfIn PDF document text
    • http://cancercareresearch.com/userfiles/file/dobakabowafateme.pdfIn PDF document text
    • https://economiadecomunion.com/ckfinder/userfiles/files/zivefegulegisobaji.pdfIn PDF document text
    • https://eghamatyab.com/basefile/bainbookcom/files/27505928308.pdfIn PDF document text
    • http://archissimo.eu/userfiles/files/20702172772.pdfIn PDF document text
    • https://tonerihned.cz/userfiles/file/xofugab.pdfIn PDF document text
    • http://costanzolegal.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/jexigumegenuzebosejami.pdfIn PDF document text
    • https://chulintemple.house-well.com/CKEdit/upload/files/makarit.pdfIn PDF document text
    • http://hig-hegmann.de/userfiles/file/kizewevatawuxoxet.pdfIn PDF document text
    • https://sketchup360.vn/wp-content/plugins/super-forms/uploads/php/files/uub46feeoklsd5gkm939qp2nb9/86215003786.pdfIn PDF document text
    • http://emiem.pl/public/upload/ckfinder/userfiles/files/tujetajew.pdfIn PDF document text
    • http://impactpluslearning.com/ckfinder/userfiles/files/76164254699.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/3vuEKuznOb8/uplcv?utm_term=true+detective+season+1+episode+1+putlockerPDF 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_off00010c13.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10C13 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0001242a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1242A 10780 bytes
SHA-256: a5c87631f37e9eadb3ab100c8f3b1e508a115a47f8e2bed315e5074b43f53480
font_02_sfnt_off00013d33.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13D33 18192 bytes
SHA-256: bc8c9231d76fc8f560b702826e8215ae3f11397bb6fc6336989885fe369cc464

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