Malicious PDF — malware analysis report

Static analysis result for SHA-256 5c1b3c37301e703a…

MALICIOUS

PDF

160.1 KB Created: 2021-05-24 19:52:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 409c0f56b02141133470017039d1b165 SHA-1: 70d4a8c74093243dbd7e98ee969135c206480ea5 SHA-256: 5c1b3c37301e703a0d000d122d09ed4d5ba1d62e4655f1b953e1d71e11948770
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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://ponafet.ru/strik?utm_term=beechcraft+king+air+350+operating+manual PDF link annotation
    • https://gavizixuf.weebly.com/uploads/1/3/5/3/135334805/pasepakasitisugulo.pdfIn PDF document text
    • https://bosijoputa.weebly.com/uploads/1/3/4/3/134317673/rulanuxomubem.pdfIn PDF document text
    • https://vowevabejera.weebly.com/uploads/1/3/0/7/130775986/7ccd8c7a05ac.pdfIn PDF document text
    • https://wijununag.weebly.com/uploads/1/3/1/4/131438003/d7efa7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408879/normal_6045c20173df4.pdfIn PDF document text
    • https://foxenaduro.weebly.com/uploads/1/3/1/1/131164157/04099d41c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470977/normal_6051ceb6d5fb4.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4495973/normal_5fc7f834df545.pdfIn PDF document text
    • https://xatotaga.weebly.com/uploads/1/3/4/7/134726025/b52a4160.pdfIn PDF document text
    • https://godowipi.weebly.com/uploads/1/3/4/5/134520373/ac988627dcd9c.pdfIn PDF document text
    • https://bovitala.weebly.com/uploads/1/3/4/4/134497817/rafezuwonive_xafuwew.pdfIn PDF document text
    • https://fubibopiravi.weebly.com/uploads/1/3/0/7/130775748/ba4f9e57c840.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388835/normal_60317674470e5.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/lososimap/16925477678.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c9281c81-3067-41c1-a416-d3ec5807dbd7/lofibezisiso.pdfIn PDF document text
    • https://s3.amazonaws.com/fadobirak/announcement_background_music_free.pdfIn PDF document text
    • https://s3.amazonaws.com/remuv/deguponelevokugoz.pdfIn PDF document text
    • https://s3.amazonaws.com/zufojadibi/adairs_linen_sheets_review.pdfIn PDF document text
    • https://s3.amazonaws.com/xukonakefules/71167840678.pdfIn PDF document text
    • https://s3.amazonaws.com/semuxemakaw/tijajoxidonetef.pdfIn PDF document text
    • https://s3.amazonaws.com/tugafebip/pazuvovigile.pdfIn PDF document text
    • https://s3.amazonaws.com/rebesudanolo/vusowaluzoj.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/139eca2f-7e14-452a-9881-bdd199c0aa6d/prayers_for_all_occasions.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000234a1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x234A1 5792 bytes
SHA-256: 71aca2c6c8a133c9c14d78dc38788751ad7f8747d60ec94d37254ae61004a7e5
font_01_sfnt_off00024840.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x24840 11892 bytes
SHA-256: 9931764739bd76b8398d5e147d47cedac6ee2316caaded83ac8107ca873dc57c

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