Malicious PDF — malware analysis report

Static analysis result for SHA-256 df744b43cc20bd6c…

MALICIOUS

PDF

77.6 KB Created: 2021-04-03 04:04:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 027d6f5051570983ba70b69055dbc3c9 SHA-1: 270f7b5adac3db5b8cce00cface17f939c408447 SHA-256: df744b43cc20bd6cdb10804dd1bf80a7e982c654f025c7af823c4570aa3a1217
156 Risk Score

Malware Insights

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

This PDF file was identified as malicious by ClamAV and an ML classifier. It contains a large number of external links, many of which appear to be part of an SEO link farm. The primary external URI points to a URL that suggests a phishing or scam attempt related to raffling a car. The document body is heavily obfuscated and appears to be junk data, but the presence of numerous external links and the specific URL structure indicate a malicious intent to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

Heuristics 5

  • 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.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://ponafet.ru/strik?utm_term=is+it+illegal+to+raffle+a+car+in+texas
    • https://cdn-cms.f-static.net/uploads/4485809/normal_603aa7ecd53a3.pdf
    • https://cdn-cms.f-static.net/uploads/4492245/normal_60281ee38f541.pdf
    • https://cdn-cms.f-static.net/uploads/4450041/normal_5fd818a1bda4e.pdf
    • https://murafasonuralab.weebly.com/uploads/1/3/5/3/135398902/e5b70.pdf
    • https://cdn.sqhk.co/tezikegoj/3jfhhUq/masha_eo_urso_colorir_e_imprimir.pdf
    • https://cdn.sqhk.co/nugopanage/edhifid/free_rap_beats_instrumentals_download.pdf
    • https://nogikukejigili.weebly.com/uploads/1/3/0/8/130873965/xopekafivawazafaw.pdf
    • https://cdn-cms.f-static.net/uploads/4480728/normal_60291b2679f94.pdf
    • https://static.s123-cdn-static.com/uploads/4475197/normal_5fcc2760e952d.pdf
    • https://popupobapovuzus.weebly.com/uploads/1/3/4/0/134012290/tibemovigogizizo.pdf
    • http://pifedalune.medianewsonline.com/calendario_lunar_2020.pdf
    • https://rawiranuxox.weebly.com/uploads/1/3/4/6/134618620/rapox-mekabak-mugazoxipimopug.pdf
    • http://kalukawuwo.mygamesonline.org/70932892908.pdf
    • https://xixozikitep.weebly.com/uploads/1/3/4/0/134097223/burekemajuwaw-zivomatud-legeguxaxenu-nowev.pdf
    • http://nasufulorejuwe.mywebcommunity.org/pigowejulopesunuko.pdf
    • http://pigalimiru.medianewsonline.com/wegizeburutomazi.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/bokelur/tuval.pdf
    • https://s3.amazonaws.com/xepululejiwof/why_did_my_kenmore_vacuum_stopped_working.pdf
    • https://c2bc7a71-cb21-434c-84f6-8d2fc09ed56d.filesusr.com/ugd/03ae60_c67098e6365545ed80c67d6280a08f2f.pdf?index=true
    • https://e9abb47e-19e5-4ec2-9f3c-2aa4e6f2bf0a.filesusr.com/ugd/92be99_dbfbd69604e8422ebb638b3226f61203.pdf?index=true
    • http://rupesujutiwu.myartsonline.com/bachianinha_n1.pdf
    • https://f05e0dbb-21cf-40ea-8b71-00b8d6f49a3b.filesusr.com/ugd/b09e1d_db822739ae394812997afbe82bdc1536.pdf?index=true
    • https://s3.amazonaws.com/gozilum/o365_mfa_end_user_instructions.pdf
    • https://30cc9e9c-6145-4029-bfdc-d0561bdb3a10.filesusr.com/ugd/0dcf4b_9d03cb307cb74098a00f4319fa3acd0f.pdf?index=true
    • 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://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f152.bin
51fbace249378a17b57d25e0da361e978dad2b7f6b4b2650879769576277e9f0		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF152 5056 bytes
font_01_sfnt_off0001029b.bin
bc3f7c0aa15b7a6a08f9fdcf20067f116180d93b66b69efe455f434f18a44cc3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1029B 11244 bytes

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