Malicious PDF — malware analysis report

Static analysis result for SHA-256 f2ef38c6e8ea619a…

MALICIOUS

PDF

67.6 KB Created: 2021-02-16 09:29:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-14
MD5: 244bc055f14ccb06c672c7481398ebc2 SHA-1: f6bf78e27d2cdd651b57fc5b5eed7dd444163c57 SHA-256: f2ef38c6e8ea619ab6270905344afe0fb4c5b60853f6910dbe0bebb864b0921d
164 Risk Score

Malware Insights

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

This PDF file exhibits characteristics of a phishing lure, specifically designed to trick users into downloading further malicious content through a link farm. The heuristic 'PDF_SEO_LINK_FARM' indicates the presence of numerous external links, likely intended to host malicious files or redirect to phishing sites. The ML classifier and ClamAV detection strongly support its malicious nature, classifying it as a phishing trojan.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://leonvi.ru/123?utm_term=jesse+livermore+book+pdf+free+download PDF link annotation
    • https://xelewutoritawi.weebly.com/uploads/1/3/1/0/131070131/2632644.pdfIn PDF document text
    • https://vixadabunukup.weebly.com/uploads/1/3/4/9/134902839/28be20f2b1cc71e.pdfIn PDF document text
    • https://cdn.sqhk.co/jesotipo/h0jhUMn/counter_terrorist_sniper_shoot_apk_free_download.pdfIn PDF document text
    • https://jajajijonox.weebly.com/uploads/1/3/1/4/131453539/fejexuba_mekavuzuw_jerewat_bibuluwar.pdfIn PDF document text
    • https://mufajagirudul.weebly.com/uploads/1/3/1/4/131452858/f313660676461.pdfIn PDF document text
    • https://tusezewepoxir.weebly.com/uploads/1/3/4/3/134339989/5db9dfd831.pdfIn PDF document text
    • https://cdn.sqhk.co/jebavimot/KSNseij/ankara_devlet_opera_ve_bale_sahnesi.pdfIn PDF document text
    • https://cdn.sqhk.co/dexasubu/gfhcUia/pac_man_championship_edition_2_switch_metacritic.pdfIn PDF document text
    • https://kegewibenufugix.weebly.com/uploads/1/3/2/6/132682471/44c7d82a2a1ddb6.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/jalasilunaz/reporting_multiple_correspondence_analysis.pdfIn PDF document text
    • http://satekivu.rf.gd/selusukatixatukawarox.pdfIn PDF document text
    • https://s3.amazonaws.com/resabomibogodaw/godezibenigerivasurinefu.pdfIn PDF document text
    • https://s3.amazonaws.com/guvovigo/kadegobivovonugijusod.pdfIn PDF document text
    • http://rewifavad.epizy.com/vaastav_movie_movies_counter.pdfIn PDF document text
    • http://jimibidubarabus.epizy.com/xumofewabekejufir.pdfIn PDF document text
    • http://bigisewolax.epizy.com/lazawo.pdfIn PDF document text
    • https://s3.amazonaws.com/jixerubowi/88102426138.pdfIn PDF document text
    • https://s3.amazonaws.com/jeduzizonox/mibifaduna.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cc8b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCC8B 5532 bytes
SHA-256: 6054ede581104fee37a3bf126588044ff959947bdb8471235fccffc6ab8e993a
font_01_sfnt_off0000df56.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF56 9972 bytes
SHA-256: ec1b90293718e86bf31ab3e14b59ca535c3d5909bc5fb832de14e53de638ea06

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