Malicious PDF — malware analysis report

Static analysis result for SHA-256 5d1d35e50fa70005…

MALICIOUS

PDF

75.1 KB Created: 2021-03-20 17:00:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 79c802d76321a54dab20f1aea4d30396 SHA-1: bb40f04cccdbcc035b92decbddbadd8b5fe798db SHA-256: 5d1d35e50fa700054274d0945aa748ab88bf4e529b1aa557293d547fa3dda92e
96 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically identified as a phishing trojan. The document body, though partially corrupted, suggests a lure related to an 'award' and contains an embedded URI pointing to a suspicious domain. The presence of embedded URLs and the overall detection strongly indicate a phishing attempt designed to trick users into visiting a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://druttle.ru/award?keyword=effects+of+budget+deficit+pdf
    • https://cdn.sqhk.co/bugininaxi/gfjOijV/gixutasebilojujimuguvif.pdf
    • https://cdn.sqhk.co/bawevabob/Irsiiib/kaleidoskop_9th_edition_answer_key.pdf
    • https://cdn.sqhk.co/dasadogiso/iggdbhb/vatumadomadibaluru.pdf
    • http://nopiwez.22web.org/voxuxiw.pdf
    • https://cdn.sqhk.co/guwuweri/b7gehc8/zegejaxufisujeruleji.pdf
    • https://cdn.sqhk.co/dopuzodopuvu/thjiXg8/60118730430.pdf
    • http://zumewidife.mygamesonline.org/68789201985.pdf
    • http://nalapagized.22web.org/57054830746.pdf
    • https://cdn.sqhk.co/gokarunedod/Rgdvie1/ben_10_protector_of_earth_apk_ppsspp.pdf
    • https://cdn.sqhk.co/jerivudofin/8W4ij8W/gademiw.pdf
    • https://cdn.sqhk.co/kerosumumato/gdRhg21/tokaido_shinkansen_route.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://zazufazujinuzo.rf.gd/what_are_the_best_foods_to_detox_the_liver.pdf
    • http://vejobewibibir.epizy.com/attitude_magazine_august_2019.pdf
    • http://telusomabufa.onlinewebshop.net/will_ahsoka_tano_be_in_episode_9.pdf
    • https://uploads.strikinglycdn.com/files/7569b424-9c1a-450f-a92f-46442770b119/subogu.pdf
    • https://uploads.strikinglycdn.com/files/6c528de6-a8e9-4723-b299-ffd031ecdf12/xezakivoronisibopuxa.pdf
    • https://uploads.strikinglycdn.com/files/6c6ea4d1-390f-4094-9f3a-dd00007ee8ff/life_skills_lesson_plans_for_adults_with_disabilities.pdf
    • https://uploads.strikinglycdn.com/files/0c779285-305d-4e92-8d61-13b1ffed4616/velezokokofiwanonovov.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_off0000eaab.bin
de6c4b5b4552aae73b56476706a6ba3e9a02813353d65e49e2a20b74451a35e3
pdf-font-stream PDF embedded font (sfnt) at offset 0xEAAB 5080 bytes
font_01_sfnt_off0000fc11.bin
66b6f631b1c449ac94c2f2ccaa69fb5644ee25f1ac02d01f3fe0605d7ebbd0ad
pdf-font-stream PDF embedded font (sfnt) at offset 0xFC11 10340 bytes