Malicious PDF — malware analysis report

Static analysis result for SHA-256 ea1d3cfefbb05e1c…

MALICIOUS

PDF

93.9 KB Created: 2021-03-30 21:11:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: dc2eaa776a32620f17c1cc1e0cfaaa6f SHA-1: d7ec61e8b7b5eddd88a973e441d90f915853d0be SHA-256: ea1d3cfefbb05e1ca1e84b987ac937e4420f7a5f3c69b6a8f105a6d1c5e63b1f
96 Risk Score

Malware Insights

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

The PDF contains an embedded URL that directs users to a suspicious domain, likely for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent, classifying it as a phishing trojan. While no scripts were directly extracted, the PDF structure and embedded URI are indicative of a social engineering attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9985

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://pelibifir.ru/strik?utm_term=how+to+appraise+pokemon+in+sword+and+shield
    • http://wumewil.sportsontheweb.net/cambridge_advanced_learner_s_dictionary.pdf
    • http://anyita.space/10485082273udp4j.pdf
    • http://shoes-storie.club/nomabyh0v8.pdf
    • http://wipebodu.mypressonline.com/tuwaxiximuguvudezogix.pdf
    • https://cdn-cms.f-static.net/uploads/4446925/normal_6011a5ead5618.pdf
    • http://nufudoze.getenjoyment.net/embroidery_basic_stitches.pdf
    • https://cdn-cms.f-static.net/uploads/4454550/normal_602834a6d2b19.pdf
    • https://cdn-cms.f-static.net/uploads/4465924/normal_60592a0d21589.pdf
    • http://skidki-day.shop/134441291667f257.pdf
    • http://bumasujofoj.getenjoyment.net/is_bbg_good_for_runners.pdf
    • http://jizawilezi.22web.org/netacad_routing_and_switching_answers_chapter_5.pdf
    • http://ganuzariture.22web.org/jeffrey_archer_heads_you_win.pdf
    • https://static.s123-cdn-static.com/uploads/4452373/normal_5fe205ef46da6.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/893fa33f-1c09-42ea-969d-d8f03b1639ae/71354736319.pdf
    • https://uploads.strikinglycdn.com/files/f310fdf5-a197-4e31-a95c-743ac005a829/pentair_water_easy_touch_manual.pdf
    • http://nabapuxamiluj.epizy.com/57107748587.pdf
    • https://uploads.strikinglycdn.com/files/8b2df0d2-b255-4ced-92e4-2421d3489396/juboxavimefamafigunerofez.pdf
    • http://zezevefo.rf.gd/rixirivuguluvu.pdf
    • https://uploads.strikinglycdn.com/files/0d0d5f94-695f-47eb-a8db-6e4d810bc26b/vutavabumanibize.pdf
    • http://zopiselewanut.epizy.com/non_stemi_guidelines_esc.pdf
    • http://pasazaxara.rf.gd/kegitikusaviv.pdf
    • https://uploads.strikinglycdn.com/files/b835fb8a-a77f-4530-8d6c-d78af4c2b3d0/what_oil_to_put_in_pressure_washer_pump.pdf
    • http://femikadin.epizy.com/26967721160.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
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f869.bin
b60ee9a11cb1550ee73b654992f76a910ebee0487ee99cef98cec31b952c9b3b		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF869 10340 bytes
font_01_sfnt_off00011ae0.bin
ba2afa354771c265dc4fcfc65f8f62fae643a120015340d3f08a8cd3b1112b3f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11AE0 5316 bytes
font_02_sfnt_off00012cd2.bin
8a46a5cc50bbf04f235e904376ce6cfe3c1343244f082e616506260498daffa3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12CD2 11032 bytes
font_03_sfnt_off00015261.bin
bfc441d837b7b3b6e145db50ef40ca26079b22b75b7d4883bc21c88ef510c1a9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x15261 16092 bytes

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