Malicious PDF — malware analysis report

Static analysis result for SHA-256 108385fa0a1e14bc…

MALICIOUS

PDF

83.4 KB Created: 2021-03-22 08:36:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-10
MD5: 1b3b81aea12e5a64e75f42b69ca1853c SHA-1: 1441d95f7fe5ad1deac9befea102f3a6035f7dd0 SHA-256: 108385fa0a1e14bc44b6e5ba1e46c8274a9386a5dc71bc6c013d1d41d02a842a
186 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous external links, many hosted on disposable domains, suggesting a link farm designed to redirect users. The ML classifier and ClamAV detection strongly indicate malicious intent, specifically identified as phishing or a trojan. The embedded URLs and the PDF's structure point towards an attempt to distribute malicious content or phish for credentials.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://maypoin.ru/award?keyword=ramadan+timing+2020+dubai+pdf PDF link annotation
    • https://penuwoguf.weebly.com/uploads/1/3/6/0/136056634/1fccdc3640b39dd.pdfIn PDF document text
    • https://kigibituridugu.weebly.com/uploads/1/3/4/3/134352406/4569160.pdfIn PDF document text
    • https://welirupew.weebly.com/uploads/1/3/4/6/134662060/2e4ba8.pdfIn PDF document text
    • https://wabegikabakupoz.weebly.com/uploads/1/3/4/6/134668284/ce233c07356f777.pdfIn PDF document text
    • https://kutemipemowu.weebly.com/uploads/1/3/4/8/134860595/mejovosorifex-satipilalikidod-difefe-guseridowojurix.pdfIn PDF document text
    • https://risimapi.weebly.com/uploads/1/3/4/3/134321435/nemafilikezup.pdfIn PDF document text
    • https://jevezorubik.weebly.com/uploads/1/3/4/8/134864628/f6a19e.pdfIn PDF document text
    • https://gasulemuj.weebly.com/uploads/1/3/4/3/134352818/rufasovunasebumuj.pdfIn PDF document text
    • https://guvidojovutubev.weebly.com/uploads/1/3/4/6/134697602/dapokafazuforor.pdfIn PDF document text
    • http://fojukuju.iblogger.org/lomasisexurojidonanojose.pdfIn PDF document text
    • https://vetitigozep.weebly.com/uploads/1/3/1/4/131437709/xavedadurajukib.pdfIn PDF document text
    • https://davugunibelerab.weebly.com/uploads/1/3/4/6/134612729/7295207.pdfIn PDF document text
    • https://vokavize.weebly.com/uploads/1/3/2/7/132710687/kiwiwun.pdfIn PDF document text
    • https://sapilijufidukuw.weebly.com/uploads/1/3/4/9/134901451/ffece38b79c39.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://dunizolosonon.rf.gd/6571181420.pdfIn PDF document text
    • http://titesixa.rf.gd/free_binaural_beats_for_sleep.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1d18d192-3ea0-4a66-b5a0-37a234e7b173/fofopelipuvotoxufa.pdfIn PDF document text
    • http://xekubot.epizy.com/tipazamexuwema.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4679529f-d0df-49ea-bacd-09ddca4901c6/memirujumu.pdfIn PDF document text
    • https://46fb9a51-9e16-4ad8-811e-2f7ed01702f7.filesusr.com/ugd/53363c_71d087c89328477c931664e2cc212334.pdf?index=trueIn PDF document text
    • http://tufuripisaren.epizy.com/free_autocad_dxf_viewer_tool.pdfIn PDF document text
    • https://abe99a74-823b-4c5d-85d6-f8d8de52422f.filesusr.com/ugd/73cc63_3ecbd03ac0f64f1994031669b3dd9f88.pdf?index=trueIn PDF document text
    • https://8d275f60-8e36-4e70-8574-b6d542a617c4.filesusr.com/ugd/dbf6c2_da17e6d52b89440aaff7474d77324f82.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/79af7803-d066-4910-b49d-06e19544ca41/lepomisuwamogubolavod.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://scripts.sil.org/OFLIn 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_off0000eaa3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEAA3 5476 bytes
SHA-256: d2340bfdbbce919318536d2a1fb86346e2de0ef6b19f1b6cd99b8c2d0a4793e2
font_01_sfnt_off0000fd34.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD34 11320 bytes
SHA-256: cd9be69e582164ffe3286dd86b617d04fceeaf23bf8cbc10937167c033164886
font_02_sfnt_off0001232b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1232B 17628 bytes
SHA-256: f219dec414bd90fc0920dfa8e0273f8ac942b93dd557a671d641ecca9fd6996e

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