Malicious PDF — malware analysis report

Static analysis result for SHA-256 2838fdca948280d5…

MALICIOUS

PDF

75.9 KB Created: 2021-03-30 13:05:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 5f39be7363c40a4dda65f69400efe1eb SHA-1: 84feb2dae044598bbd2962785adcc17b22834d39 SHA-256: 2838fdca948280d5d89dfc602c38d24f905943d70a173f5d3993a0a824fb99bd
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file was flagged by ClamAV as Pdf.Phishing.Trojan and an ML classifier indicated a high probability of maliciousness. It contains an embedded URI pointing to 'bologen.ru', which is likely part of a phishing or malware distribution scheme. While no scripts were explicitly extracted, the presence of embedded URLs and the nature of the detection suggest an attempt to redirect the user to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://bologen.ru/aws?utm_term=how+to+do+a+self+hypnosis PDF link annotation
    • http://tevojagi.iblogger.org/83437276701.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481052/normal_6027222bae964.pdfIn PDF document text
    • http://mukumirulaf.22web.org/sebavenapetopusetu.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4387243/normal_5ffcc80932d39.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4468536/normal_5ff229649a427.pdfIn PDF document text
    • http://tuvoreda.scienceontheweb.net/analog_and_digital_circuit_design.pdfIn PDF document text
    • http://pirunumilusarib.sportsontheweb.net/star_trek_2009_movie_free.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4471710/normal_604defafb8fac.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/genukopapovixo/ft-857d_mic_gain.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/71214f00-6339-4a79-9c02-bf41de243f17/wumulosunovopotilurowoxif.pdfIn PDF document text
    • http://jufamupubo.epizy.com/29092273568.pdfIn PDF document text
    • https://s3.amazonaws.com/penale/40801719820.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d2ba41c0-e6e4-49df-8b22-73634422e531/stephen_king_the_outsider_series.pdfIn PDF document text
    • https://s3.amazonaws.com/tipikaxe/zezarowo.pdfIn PDF document text
    • http://niwanabumupe.epizy.com/26315702265.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f1bf3894-e696-47d9-9128-84ba846f92f1/the_boy_in_the_striped_pyjamas_book_cast.pdfIn PDF document text
    • https://s3.amazonaws.com/xovajukoxin/9601345165.pdfIn PDF document text
    • http://tonerud.epizy.com/39385202654.pdfIn PDF document text
    • https://s3.amazonaws.com/tarajix/duditafatakisaxixetov.pdfIn PDF document text
    • https://s3.amazonaws.com/somisilegex/why_is_my_irobot_roomba_not_charging.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b12850fb-db15-4e90-b882-d1fd6d2331d1/law_of_universal_gravitation_worksheet_7-1_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/vaxebisapesi/la_bastide_de_moustiers_guide_michelin.pdfIn PDF document text
    • http://nokejufesuw.atwebpages.com/88306706022.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_off0000ece6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xECE6 5188 bytes
SHA-256: a79f341eb63bfc644f56b5dea0b2b4e3a5ca2d8f0dfb82c0b43a2a7343ffaadd
font_01_sfnt_off0000fea7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFEA7 10500 bytes
SHA-256: 4f6ab3ded1c06268084c418697c5ad43202f32a010d29c62730cb45233f4bc4d

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