Malicious PDF — malware analysis report

Static analysis result for SHA-256 b61d41765edeeda6…

MALICIOUS

PDF

118.1 KB Created: 2021-03-09 07:05:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: fc830c905c44a9aac2551bfc88cf7f48 SHA-1: ccebbc2041ef1ee7f07b2db3089055099b0c2eff SHA-256: b61d41765edeeda6688a7731616e5d4b46a9e24eadf2b9d31aad9ef06ef9f3b2
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 0.9994

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://golowaki.ru/123?utm_term=sheets+vlookup+array PDF link annotation
    • http://pixelbarista.com/12610247677wmgrb.pdfIn PDF document text
    • http://trellos.fun/61314953435lpasc.pdfIn PDF document text
    • http://sallles.ru/einsteins_dreams_nytimes_reviews5twv.pdfIn PDF document text
    • http://gogadozuxigode.iblogger.org/b._a_pass_movie_1080p.pdfIn PDF document text
    • http://noxogejukebe.mypressonline.com/59900707878.pdfIn PDF document text
    • http://feedbacrnz.space/53749518233a3ski.pdfIn PDF document text
    • http://straponartist.com/27051719983x7ba5.pdfIn PDF document text
    • http://vufarilijofo.iblogger.org/super_cycle_jungle_rider_game.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/mejawiwomak/extended_essay_guidelines_2019.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d28bad56-5e1a-4e5d-a21f-e7738331175d/how_to_set_time_on_casio_world_time_telememo_30.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/caed52a3-01c8-4378-8bc1-ec7128065d20/compare_and_contrast_the_structure_of_arteries_and_veins_and_arterioles_and_venules.pdfIn PDF document text
    • https://s3.amazonaws.com/solonebosop/59120464293.pdfIn PDF document text
    • https://s3.amazonaws.com/wazotojemov/7160486858.pdfIn PDF document text
    • http://nozutezejawawup.rf.gd/jagikob.pdfIn PDF document text
    • https://s3.amazonaws.com/gawabog/metal_gear_solid_2_substance_pc_mods.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7aea1679-537a-424a-8089-141ce4ffaded/how_old_is_tom_daleys_partner.pdfIn PDF document text
    • http://niwimugosaz.onlinewebshop.net/pekenodufozavonumojonobon.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5ec1f633-4e0e-4f51-baff-e076fb49ebf1/93111624967.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5c397a82-f5c4-45ba-ba5a-9637ff85d62d/ars_notoria_franais.pdfIn PDF document text
    • https://s3.amazonaws.com/jusagi/totelup.pdfIn PDF document text
    • https://s3.amazonaws.com/muwemivumazulax/forejukasofifoguguniputil.pdfIn PDF document text
    • https://s3.amazonaws.com/wizitifowubux/fagojolakid.pdfIn PDF document text
    • http://bitetam.epizy.com/gezex.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_off000190f9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x190F9 5236 bytes
SHA-256: c09ad7da7f9c8ac9128918f35b63997caa1ca18f9c71bc0441359d33d4173e1a
font_01_sfnt_off0001a2ce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1A2CE 11748 bytes
SHA-256: 3abf63d6b420aef9ab8b3d8fc289e5e28d7dbcfbe7d3e2345da4c8a21a9afa2f

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