Malicious PDF — malware analysis report

Static analysis result for SHA-256 a844313226e24807…

MALICIOUS

PDF

85.1 KB Created: 2021-04-04 19:09:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d5c6afa339594b4467d5e591e7321c5b SHA-1: d185bc666bc97944ab5545aa105e50a542d825d5 SHA-256: a844313226e2480736316428b28ab4161a77f9b54c70781f4376bd1884e59e20
96 Risk Score

Malware Insights

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

This PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to 'https://baarspo.ru/wix?keyword=pathfinder+2e+attack+bonus', which is likely intended to redirect the user to a malicious site. The document body is heavily obfuscated, preventing a clear understanding of its specific lure, but the presence of multiple unknown URLs suggests a phishing or credential harvesting attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • 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://baarspo.ru/wix?keyword=pathfinder+2e+attack+bonus
    • https://sijujufe.weebly.com/uploads/1/3/4/6/134696532/5e8c04ea8e.pdf
    • http://wamijuw.22web.org/bureaucratic_politics_theory.pdf
    • http://sale20.site/76435848530787a7.pdf
    • http://coupons2020.info/rick_and_morty_comic_bookv914o.pdf
    • http://rutopadazemed.22web.org/lewezepalebupuzobiji.pdf
    • https://bewanabexujafo.weebly.com/uploads/1/3/6/0/136050633/tililofilawijogaj.pdf
    • https://jifalutisapore.weebly.com/uploads/1/3/4/7/134772579/wifop.pdf
    • https://tidumexuxuzi.weebly.com/uploads/1/3/1/0/131071252/5059993.pdf
    • http://airned.ru/how_to_solve_kinetic_and_potential_energy_problemsvs3qp.pdf
    • http://superheatbelt.xyz/ralusulosozajimajitalel17v6.pdf
    • https://pexarokozisakim.weebly.com/uploads/1/3/5/3/135313666/9405384.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/f111ba7d-10a8-4796-96c9-216da7fd9519/toyota_sienna_2006_radiator_autozone.pdf
    • https://s3.amazonaws.com/wutezigojuxi/70257954329.pdf
    • https://uploads.strikinglycdn.com/files/62267bc6-f234-48ef-825f-b24e24a067e3/47354224232.pdf
    • https://uploads.strikinglycdn.com/files/87a1fa33-786f-4b4c-be55-0614420f005c/modern_control_system_theory_m.gopal_free_download.pdf
    • https://s3.amazonaws.com/kelageketisefuv/buxidutuvaxesapurubizimex.pdf
    • http://sigulovoben.rf.gd/physiology_ak_jain.pdf
    • https://s3.amazonaws.com/tobojelusiwi/fuwujedipaba.pdf
    • 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_off00010d78.bin
e4a550c3bec15a1d672fa7cc4111cc0e24a763ea725ad437663ac37b22fb9e80
pdf-font-stream PDF embedded font (sfnt) at offset 0x10D78 5416 bytes
font_01_sfnt_off00011fdd.bin
1c8495f3294702c41329db68fd8a49f76015fafe93884baec268c3f2ec7fbbb9
pdf-font-stream PDF embedded font (sfnt) at offset 0x11FDD 11992 bytes