Malicious PDF — malware analysis report

Static analysis result for SHA-256 b6b14c30210e246e…

MALICIOUS

PDF

98.0 KB Created: 2021-08-11 01:01:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-23
MD5: 63de392b83158801a320c54895219c1e SHA-1: 4cb1bfe7bef1937fbc05353d35e3139903669b21 SHA-256: b6b14c30210e246ea9561df112138c6433f09832aaab0689a08457cff998aee1
156 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many of which point to websites hosted on compromised CMS platforms or disposable domains, indicating a link farm designed to distribute malicious content. The ML classifier and ClamAV detection strongly suggest malicious intent, likely related to phishing or malware delivery through these links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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 https://adikkedua.com/contents//files/sapadeduni.pdf In PDF document text
    • https://fuchscars.com/wp-content/plugins/super-forms/uploads/php/files/21d3d71f28cc06dcaf312eaa257d4bde/27575867073.pdfIn PDF document text
    • https://refundsrefunds.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609b1d54a1ed1---xogim.pdfIn PDF document text
    • http://studiodrago.eu/userfiles/files/nesofofubanura.pdfIn PDF document text
    • https://www.terraton.com.my/ckfinder/userfiles/files/vunomipabedesopo.pdfIn PDF document text
    • http://all4pets.cz/ckfinder/userfiles/files/82948365919.pdfIn PDF document text
    • http://snailgame.ru/upload/files/20210725134144.pdfIn PDF document text
    • http://epicridesnepal.com/files/miwodanuviluligu.pdfIn PDF document text
    • http://www.sunarmisir.com.tr/wp-content/plugins/super-forms/uploads/php/files/l9bsnrk92uf5ita2vohk9ev4o4/98357624345.pdfIn PDF document text
    • https://suma.ca/upload/editor/file/75885437547.pdfIn PDF document text
    • https://lisacutler.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d918a6b5d1c---3174036760.pdfIn PDF document text
    • https://cashmeredreams.com/wp-content/plugins/super-forms/uploads/php/files/c06d8ee50a0b879ddc052f9c82986c83/9248631134.pdfIn PDF document text
    • https://expungemyrecordnj.com/wp-content/plugins/formcraft/file-upload/server/content/files/16087dda870745---42522250365.pdfIn PDF document text
    • https://christianboudreau.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606c98de20522---tutowun.pdfIn PDF document text
    • https://www.db-ynox.fr/ckfinder/userfiles/files/zobabozetibikonenewolasev.pdfIn PDF document text
    • https://aalatour.com/basefile/b2caalatourcom/files/27039161856.pdfIn PDF document text
    • http://www.putnamtaxi.net/wp-content/plugins/formcraft/file-upload/server/content/files/160811e96511e0---67078285615.pdfIn PDF document text
    • http://www.nowsingapore.co.id/wp-content/plugins/formcraft/file-upload/server/content/files/160c0f1f362a70---90284383676.pdfIn PDF document text
    • http://mnarch.it/userfiles/files/lokis.pdfIn PDF document text
    • https://mycocoa.org/images/upload/files/rawaxalerivobiti.pdfIn PDF document text
    • http://murphysbeads.com/clients/54316/File/jezifumuluma.pdfIn PDF document text
    • http://zerosquareonline.com/file/zuwifunafudunusigukasu.pdfIn PDF document text
    • https://coloreverything.love/wp-content/plugins/super-forms/uploads/php/files/5133dd13445ef673ba729715384919d8/14691983945.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/GLLx1DTH0VQ/uplcv?utm_term=fruits+basket+2019+ending+2+lyricsPDF 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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e87d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE87D 16524 bytes
SHA-256: a8da69f32aa910ef0a36fc9fcdf9b418956ef0dbbb792b97aefeb846ed78193e
font_01_sfnt_off00011b17.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11B17 16740 bytes
SHA-256: 753556edd85077fd6176079d1e225add6ea12557554c92c660a3ddb7678d9e63
font_02_sfnt_off00014664.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14664 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_03_sfnt_off00015e7b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15E7B 11312 bytes
SHA-256: 125775e52856d51d9c7a7022d3cf981f7e7c05e4ef2b9fb05c963a3cd2d5aa15

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