Malicious PDF — malware analysis report

Static analysis result for SHA-256 48aa27c7a8f37209…

MALICIOUS

PDF

75.6 KB Created: 2021-03-23 22:42:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 65fb615c581734391a3221c69d5e83c0 SHA-1: a490fff134d6845ffe52b95e4ee0ec01b9e7c29a SHA-256: 48aa27c7a8f37209a39c9e7365e2e64cd69ebee0dd4c780be4b511d2f7ab9a35
96 Risk Score

Malware Insights

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

The file is a PDF document that contains an embedded URL pointing to a suspicious domain, identified as a phishing attempt. The ML classifier and ClamAV detection strongly indicate malicious intent. The document body, though partially corrupted, suggests a lure related to a manual, which is a common tactic for phishing campaigns.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://resalured.ru/wix?keyword=boss+rc+1+manual+espa%25C3%25B1ol
    • http://naxenavuk.22web.org/introducing_two_persons_email_template.pdf
    • http://nutosuvitiraj.scienceontheweb.net/28385167710.pdf
    • https://cdn.sqhk.co/vakolitakap/igNidhf/61440355509.pdf
    • http://busevabafumoje.iblogger.org/94024344251.pdf
    • http://rifijetuvijilam.medianewsonline.com/13829045856.pdf
    • http://lakujalinifibo.mypressonline.com/public_relations_ebook.pdf
    • http://tawaguf.scienceontheweb.net/deduje.pdf
    • https://cdn.sqhk.co/rumoligodo/baDichd/wifi_smart_switch_wiring_diagram.pdf
    • https://cdn.sqhk.co/vubiwete/Ziixxhh/equalizer_2_full_movies_free.pdf
    • https://cdn.sqhk.co/noperizapewo/ghZidzS/condado_pittsburgh_reservations.pdf
    • https://cdn.sqhk.co/tiwefuxab/xUMgdjg/three_kingdom_mighty_super_hero_apk.pdf
    • http://lixodamevurobar.mygamesonline.org/97314298968.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://torasimi.rf.gd/powosodib.pdf
    • https://uploads.strikinglycdn.com/files/c66881a5-d6a9-40d6-a173-3550030534b8/55180019756.pdf
    • https://uploads.strikinglycdn.com/files/07611a71-f41d-47b3-8eab-71bf13b80736/35554516504.pdf
    • http://tejojode.rf.gd/samawefonib.pdf
    • https://923a8ca3-316b-4844-b38f-9bc955ad4852.filesusr.com/ugd/312e0e_116e6d0763af48a395fdca2f574031c5.pdf?index=true
    • http://tiruweditivunaw.myartsonline.com/72665516786.pdf
    • https://176fe727-baa2-4f6f-8ab0-cddcd97ecb74.filesusr.com/ugd/45df28_8fe22bea2d454d0fabcc3eeb312054d3.pdf?index=true
    • http://gukutimaguvuzum.onlinewebshop.net/food_sources_of_vitamin_a.pdf
    • https://5fdaa9e0-ad6d-443b-8779-beb8e45026dc.filesusr.com/ugd/05301a_0ab643261453490995af23c0f00e985a.pdf?index=true
    • http://moxinipikilugu.rf.gd/gatijurawenususakalitawes.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_off0000e741.bin
8bca13a9fecd8fe9b7bbf97d90e4bed9b8475c1aec9a45b2e3e1758a92e0f43b
pdf-font-stream PDF embedded font (sfnt) at offset 0xE741 5392 bytes
font_01_sfnt_off0000f943.bin
f05b867e58f9ef6697d2f6856fbae2cadee3327ce2fb2508cf8ac507d964c239
pdf-font-stream PDF embedded font (sfnt) at offset 0xF943 11764 bytes