Malicious PDF — malware analysis report

Static analysis result for SHA-256 e313f6b0ae273da5…

MALICIOUS

PDF

70.6 KB Created: 2021-03-24 23:31:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a4c773b4d2896d37463449d84f853474 SHA-1: 252110618e59c226f3e7b157790c2c6f950681b8 SHA-256: e313f6b0ae273da58f4167e4422ed02039081589b873f41fe18d46e2d3ac06ae
76 Risk Score

Malware Insights

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

The PDF contains an algorithmically generated URL, 'http://privateguardingserviceagainstdanger.site/25599128919oxawh.pdf', which is highly suspicious and indicative of a malicious download attempt. The presence of multiple external URIs further supports the likelihood of this document being used for phishing or malware distribution. No scripts were extracted, limiting the analysis of specific execution behaviors.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • PDF link to algorithmically-generated URL high PDF_RANDOM_URL_LINK
    PDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
  • 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://soxebez.ru/123?utm_term=facebook+lite+messenger+old+version
    • http://wssummer.space/28790156343f5ls1.pdf
    • http://privateguardingserviceagainstdanger.site/25599128919oxawh.pdf
    • http://soldonlittleton.com/biophilic_design_bookalgg5.pdf
    • https://suwurivuta.weebly.com/uploads/1/3/0/7/130775320/savegiloridoga_lujamezuligusam_dunugebigado.pdf
    • http://sanadewa.iblogger.org/leritap.pdf
    • http://msertis.xyz/disney_movies_coming_out_in_october_2020egnkm.pdf
    • https://sanijala.weebly.com/uploads/1/3/4/8/134889677/15e8e8505e.pdf
    • https://norusukesalija.weebly.com/uploads/1/3/4/3/134356509/mogemiduwajeg-xatepidokuf-joxedila-pewoginotinaz.pdf
    • https://xupukowipor.weebly.com/uploads/1/3/5/3/135304830/9011503.pdf
    • https://gusumadanu.weebly.com/uploads/1/3/2/6/132695601/tetidewi.pdf
    • https://cdn-cms.f-static.net/uploads/4414342/normal_605ba9f240834.pdf
    • https://cdn-cms.f-static.net/uploads/4377662/normal_604b6f6849070.pdf
    • https://static.s123-cdn-static.com/uploads/4409421/normal_5fc69cf9cc003.pdf
    • https://dewajijivixire.weebly.com/uploads/1/3/4/6/134638152/25ca627d5bb71.pdf
    • https://pitalozel.weebly.com/uploads/1/3/1/3/131384414/nofekepanugun_nebapoludes.pdf
    • http://topsalon.xyz/biwisubusegudunivebell8nw.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/4801729b-78f0-4c26-891d-a82a28544c84/27429091023.pdf
    • http://mofomunor.rf.gd/are_army_rangers_trained_in_hand_to_hand_combat.pdf
    • https://uploads.strikinglycdn.com/files/708b5c38-5a5f-47e2-8d51-81c1ebce235f/binh_php_tn_t_dnh_cho_phi_p.pdf
    • https://uploads.strikinglycdn.com/files/741f925f-6412-4bec-8cef-b6d83ad802cd/how_to_reprogram_garage_door_keypad_craftsman.pdf
    • http://jazuwodawunubow.epizy.com/14272528178.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d56c.bin
d7b2a134bd1e7fd88cf1a7a9f7b41a3816803a28651f35452f8a96115055024f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD56C 5476 bytes
font_01_sfnt_off0000e7f9.bin
888b60ca557c78f8041f95216f546e13ef8c20b2a00e9321ca2cbab6b20a8f28		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE7F9 11432 bytes

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