Malicious PDF — malware analysis report

Static analysis result for SHA-256 b6357fa6d03093ea…

MALICIOUS

PDF

237.1 KB Created: 2021-04-28 14:46:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-02
MD5: 3fb610bce0c1e720184bbb6a2de44b49 SHA-1: 5ec9dd3b4bdbf8ae8500c58d462eca97a23c0084 SHA-256: b6357fa6d03093eaa80dc4899e03a580924e8ff65901f8e55d1796a66d41c0f6
96 Risk Score

Malware Insights

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

The PDF contains an embedded URI pointing to a URL that appears to be part of a phishing lure, disguised as a search result for a remote control. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware distribution. No scripts were extracted, but the presence of external URIs suggests a download or redirection attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9876

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://gimoguvi.ru/strik?utm_term=denon+avr+3808+remote+control PDF link annotation
    • http://kojijeku.mygamesonline.org/23859473507.pdfIn PDF document text
    • https://cdn.sqhk.co/jibezilesu/ipQzhe5/college_basketball_coaches_poll_2020.pdfIn PDF document text
    • https://cdn.sqhk.co/sofilita/lNiaSMF/doodle_alchemy_animals_online.pdfIn PDF document text
    • https://cdn.sqhk.co/xeliwiwogivo/ijwt0hc/game_maker_3d_app.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4488141/normal_602244c43a5e9.pdfIn PDF document text
    • https://cdn.sqhk.co/faroziwe/3sEgd1W/fur_elise_virtual_piano_trello.pdfIn PDF document text
    • https://cdn.sqhk.co/joxopejufito/ibjcktN/13799516611.pdfIn PDF document text
    • http://rotiwopofeze.mywebcommunity.org/girl_scout_brownie_dancer_badge_requirements.pdfIn PDF document text
    • https://cdn.sqhk.co/xilelawemu/iH3jchi/rifolopamuvi.pdfIn PDF document text
    • https://desotidibig.weebly.com/uploads/1/3/0/7/130775813/wibevezawuba.pdfIn PDF document text
    • https://buzoxebujodi.weebly.com/uploads/1/3/5/9/135971705/2295900.pdfIn PDF document text
    • https://cdn.sqhk.co/xugiwatokax/OUkjdiV/calendar_design_2020.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4391013/normal_5feb0dc32661a.pdfIn PDF document text
    • https://merebidoso.weebly.com/uploads/1/3/4/3/134344951/463515.pdfIn PDF document text
    • https://cdn.sqhk.co/kewawukufiju/c8yQeAH/ruxas.pdfIn PDF document text
    • https://cdn.sqhk.co/tatudawo/jcjjCvE/multiple_email_accounts_on_ipad_3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4447497/normal_606dee834d68c.pdfIn PDF document text
    • https://cdn.sqhk.co/kiribikiv/aWwRw2x/68516147891.pdfIn PDF document text
    • https://cdn.sqhk.co/rolileduvof/ggfM4dT/63374688489.pdfIn PDF document text
    • https://jafumatelitu.weebly.com/uploads/1/3/4/8/134884178/8601070.pdfIn PDF document text
    • https://cdn.sqhk.co/bogovureg/hdghwrw/my_verizon_app_not_working_on_unlocked_phone.pdfIn PDF document text
    • https://japiravonasuv.weebly.com/uploads/1/3/4/6/134644749/pojamuwabugumip.pdfIn PDF document text
    • https://cdn.sqhk.co/gupukutolet/KDcheT3/75267965404.pdfIn PDF document text
    • https://cdn.sqhk.co/zagakobafot/55dhbWB/74282916064.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00019292.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x19292 154628 bytes
SHA-256: 5c77f28b63c69a69551795c35d9a4b3600b89f6f7bc5c2212032e9d1d85ac9ad
font_01_sfnt_off000359fd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x359FD 5324 bytes
SHA-256: ce1ee232d5b1d207b3d9c2e5db46c6851e8e0c3289f0cffc4d5f8c90d2f1f4a1
font_02_sfnt_off00036c10.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x36C10 10760 bytes
SHA-256: bf3d8fd5a4b7bda8c247229cd781390ae826be7a45b2899cd18a4c28fa2b5633
font_03_sfnt_off000390e2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x390E2 16220 bytes
SHA-256: c62219a60afb6bf01b98a627255c640996da3c1acd408d4371030eed31eb6fc8

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