Malicious PDF — malware analysis report

Static analysis result for SHA-256 d4aafc2f3bc7505e…

MALICIOUS

PDF

73.6 KB Created: 2021-02-27 15:02:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-13
MD5: 34a648c50f9fa9639f03885002dea60b SHA-1: e9b342e1c426d8d1b43b8677aa1d71cf0751120b SHA-256: d4aafc2f3bc7505ebb4839ee865e49f25ff1ed3a640ef3b49eb3c1276e90b09f
126 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a phishing or trojan threat. It contains an embedded URI pointing to 'seumenha.ru', which is likely a malicious domain used for further exploitation or credential harvesting. The PDF's structure and embedded link suggest a social engineering tactic to trick users into visiting a potentially harmful site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://seumenha.ru/wix?keyword=intro+to+polynomials+worksheet+answers PDF link annotation
    • http://powajaxib.medianewsonline.com/basic_maths_formulas_in_hindi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4412775/normal_6027cee378c57.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366662/normal_5fd3b6c471e57.pdfIn PDF document text
    • https://radixukawatezod.weebly.com/uploads/1/3/4/6/134645496/marebekezub-vopusifuxudi-kapef.pdfIn PDF document text
    • http://jalazekesofijot.medianewsonline.com/escuchar_musica_tecno_70_80_90.pdfIn PDF document text
    • https://bezesigut.weebly.com/uploads/1/3/2/6/132681157/e3ec1b183.pdfIn PDF document text
    • https://zororoxuz.weebly.com/uploads/1/3/4/3/134309160/93c2bf9.pdfIn PDF document text
    • http://podonebatimekel.22web.org/what_is_social_psychology_in_simple_words.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4480880/normal_5fe79318e8555.pdfIn PDF document text
    • http://dokojusekorukuf.iblogger.org/how_to_get_fox_sports_midwest_on_dish_network.pdfIn PDF document text
    • https://fadesirowawilej.weebly.com/uploads/1/3/1/6/131606674/cc14673cf.pdfIn PDF document text
    • http://xonigej.mypressonline.com/37866581870.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/fasomusogapovi/arvind_ltd_annual_report_2018-_19.pdfIn PDF document text
    • http://kiwajuku.epizy.com/smackdown_results_live_bleacher_report.pdfIn PDF document text
    • https://s3.amazonaws.com/kisagoz/elections_2019_schedule.pdfIn PDF document text
    • http://mowesedapi.epizy.com/74578757336.pdfIn PDF document text
    • http://vujoponax.epizy.com/eyewitness_report_ks2.pdfIn PDF document text
    • http://jegigas.epizy.com/decreto_de_guerra_a_muerte.pdfIn PDF document text
    • http://zuzipidagazetu.rf.gd/elgar_cello_concerto_sheet_music.pdfIn PDF document text
    • https://s3.amazonaws.com/gewuwasi/54950380025.pdfIn PDF document text
    • https://s3.amazonaws.com/lazolu/ropulaporukop.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_off0000e456.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE456 5256 bytes
SHA-256: 94648f5d9132305d645f05034cfd92757c6b78acb1ecf5d2a15f060d3ad4247f
font_01_sfnt_off0000f61b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF61B 10232 bytes
SHA-256: 2575d0f980febea8650a2345dfff4398ba08ef0160cf33bd99f0e33b00825614

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