Malicious PDF — malware analysis report

Static analysis result for SHA-256 1addc8b853014c1f…

MALICIOUS

PDF

91.7 KB Created: 2021-06-27 21:47:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: cc412a365e585c99bf5e39f988978712 SHA-1: 95d93644af8bcb0f331c867346375d7cab7643b3 SHA-256: 1addc8b853014c1fb5561987beb0ec03b02b8353144ede145d9d6fb2c6d10535
156 Risk Score

Malware Insights

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

The file was identified as malicious by a ML classifier and ClamAV, detecting it as a phishing trojan. Static analysis revealed it functions as a link farm, containing numerous URLs pointing to compromised websites. These links are likely intended to lure users to phishing sites or download further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9937

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://www.oknookna.pl/wp-content/plugins/formcraft/file-upload/server/content/files/1609157fda0b99---59975774754.pdf
    • http://mdc.ir/ckfinder/userfiles/files/60589544608.pdf
    • http://goteneplast.se/files/images/file/38186610425.pdf
    • http://championshipsportsrings.com/clients/23492/File/81998253349.pdf
    • https://humanistbeauty.com/wp-content/plugins/super-forms/uploads/php/files/ja3lsvh967mg9311nsc2g317n7/19183053135.pdf
    • http://www.520amis.com/upload/files/tatul.pdf
    • https://elicopter-de-inchiriat.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160b80806a88f8---danetadofenedewomifox.pdf
    • https://whitesal.com/data/images/file/5748_20210608013332.pdf
    • https://charlesstreetvideo.com/userfiles/file/12045019868.pdf
    • https://senzedigicraft.com/wp-content/plugins/super-forms/uploads/php/files/b292890e797c2a3ae549d727fd61cd38/jazinogosoraxolevipitari.pdf
    • http://subventionsbetrug.de/wp-content/plugins/super-forms/uploads/php/files/s20f45fhldeb87lkichg4qu96p/32104053071.pdf
    • https://www.frankreich-ferien.ch/wp-content/plugins/formcraft/file-upload/server/content/files/16085b3244e51c---xusapigapibaromafuxunot.pdf
    • https://storage-in-motion.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607bc5126e35e---demubukupurosobini.pdf
    • https://refour.dk/wp-content/plugins/super-forms/uploads/php/files/9121f0934930ce83a36541563daee0a7/nisuzavisekoliga.pdf
    • http://targdenunti.ro/userfiles/file/nafenuperixefap.pdf
    • https://www.ccps.mx/wp-content/plugins/super-forms/uploads/php/files/7f1488fc7f74b109003510c3880ef9b3/64202645787.pdf
    • http://clinicacomciencia.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16092c238d83b9---90633385542.pdf
    • https://militarynetwork.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160a353febb03b---pidetuma.pdf
    • http://www.olympussverige.se/wp-content/plugins/super-forms/uploads/php/files/6o4anmefo8k4qp6e44fjk2eh68/kitetugibedibojase.pdf
    • https://www.northamericatalk.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607f641381fd7---rawefimowulanosawa.pdf
    • https://ehblending.com/wp-content/plugins/super-forms/uploads/php/files/20468f017681774be2383b34c6313e52/turalolateto.pdf
    • http://www.cuerpomenteyespiritu.es/wp-content/plugins/formcraft/file-upload/server/content/files/1607e3a1e7bc1b---zoketujevibites.pdf
    • http://navigator-nsk.ru/userfiles/file/66509066623.pdf
    • https://mrmusicfoundation.org/wp-content/plugins/super-forms/uploads/php/files/vck0cvbvogojt365ch840rubr6/pusipeg.pdf
    • https://www.mercedesbenzofaustinservice.com/wp-content/plugins/formcraft/file-upload/server/content/files/16088583a84419---44742687681.pdf
    • https://feedproxy.google.com/~r/Uplcv/~3/YTWXjIUwRh0/uplcv?utm_term=are+apples+good+for+acne
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001050e.bin
26058b9722451e6df7c740d49eec05d0e70fe6b2afd76db8e46a0a4e43ee8327		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1050E 17000 bytes
font_01_sfnt_off0001313b.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1313B 16792 bytes
font_02_sfnt_off00014952.bin
d93522fde5aa52c989af2c29fe7f066dd452a1c7c7764a75309ba6a913310eb9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x14952 10584 bytes

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