Malicious PDF — malware analysis report

Static analysis result for SHA-256 436aaca16b8f833c…

MALICIOUS

PDF

85.4 KB Created: 2021-03-24 12:43:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a41a1972e3a9625025be3f4c94880854 SHA-1: 5a5c456fcd48d54af8569b8c2e62df262ed63c2b SHA-256: 436aaca16b8f833ccdb82a84ae16e00c253db725d262cb3eae7f498f46503ca2
96 Risk Score

Malware Insights

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

The PDF file contains embedded URLs, one of which, 'https://soxebez.ru/wix?keyword=ge+cafe+advantium+wall+oven+manual', is flagged as suspicious. The document body, though heavily obfuscated, suggests a lure related to a 'GE cafe advantium wall oven manual'. The presence of PDF-specific heuristics and a high ML classifier score indicate malicious intent, likely to redirect users to a phishing or malware-hosting site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://soxebez.ru/wix?keyword=ge+cafe+advantium+wall+oven+manual
    • https://static.s123-cdn-static.com/uploads/4371807/normal_600668f03d2f3.pdf
    • https://static.s123-cdn-static.com/uploads/4366653/normal_5fe01f06d12c3.pdf
    • https://cdn-cms.f-static.net/uploads/4419645/normal_604187b122a13.pdf
    • https://static.s123-cdn-static.com/uploads/4392439/normal_5ffcd2a50c502.pdf
    • https://static.s123-cdn-static.com/uploads/4418167/normal_5fcebd923b4c9.pdf
    • http://fasebumexu.iblogger.org/99152714313.pdf
    • http://pufasesewevobe.22web.org/watch_time_travelers_wife_online.pdf
    • https://static.s123-cdn-static.com/uploads/4407997/normal_5ff970b3d758a.pdf
    • https://static.s123-cdn-static.com/uploads/4454679/normal_600201849fedc.pdf
    • https://cdn-cms.f-static.net/uploads/4414357/normal_6021c42c7971b.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/dac8679b-7151-45ef-a4cd-e9d4def5ae26/how_long_is_the_second_harry_potter_film.pdf
    • http://fufagagebo.epizy.com/86287919894.pdf
    • https://uploads.strikinglycdn.com/files/77c8a89b-00f5-4c13-ba4c-6220e00578cc/nigesapifesodubojosoz.pdf
    • https://uploads.strikinglycdn.com/files/17e070ff-b9ce-449f-9c5a-4737300b6602/what_is_slave_in_spanish.pdf
    • http://posujozu.epizy.com/dewexiwipo.pdf
    • https://s3.amazonaws.com/votuweroxigezog/lm339_smd_datasheet.pdf
    • http://vivapemek.rf.gd/ccna_routing_and_switching_200_125_dumps.pdf
    • https://uploads.strikinglycdn.com/files/74927de1-0a63-4d6f-9442-0603e00e1fba/lee_kuan_yew_book_from_third_world_to_first.pdf
    • https://uploads.strikinglycdn.com/files/9ccc2075-0462-4d34-bec0-277c7c447962/silezem.pdf
    • https://uploads.strikinglycdn.com/files/d272b909-a981-4d60-a0da-07e49beaa2ac/muwadoxudesoxeluv.pdf
    • https://s3.amazonaws.com/zozuxukoxo/anemia_and_ckd_icd_10_coding_guidelines.pdf
    • https://uploads.strikinglycdn.com/files/7448e9ae-fa24-4703-81af-c8520f165f0b/hatha_yoga_for_beginners_at_home.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_off0001119a.bin
c25b782f2c2b484a14bae6edf9e0ffd593a6192fe4722d9ae0ce17ad564e447d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1119A 5076 bytes
font_01_sfnt_off000122f0.bin
169f3f3b552db2bb3c2d13f326135baca1e07c314c0302947abdeb61c5c5beaf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x122F0 11032 bytes

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