Malicious PDF — malware analysis report

Static analysis result for SHA-256 a810ae9ab287c9bd…

MALICIOUS

PDF

84.2 KB Created: 2021-03-29 08:25:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5fea40c481936027d10bf9220c81dff4 SHA-1: ea4b9da4ab3be1289b3cf38e56b7003b9e4deb1a SHA-256: a810ae9ab287c9bdca06c4a57aa690f18984bbc6ae5d668266c26aa906f6b4c3
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, with a high risk score. It contains an embedded URI pointing to a suspicious domain, which is likely used to host a malicious payload or phishing content. The document body, though heavily obfuscated, appears to be a lure related to a game download, suggesting a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://jumiwimov.ru/wix?keyword=rusty+lake+paradise+apksum
    • https://cdn-cms.f-static.net/uploads/4392215/normal_60352a117dc2b.pdf
    • http://zanexipizuzog.iblogger.org/deloitte_romania_tax_guide.pdf
    • https://zugixipenelir.weebly.com/uploads/1/3/4/5/134591811/wupobanukofuxep.pdf
    • http://pivodevotuxuw.22web.org/sarcoidosis_pathology.pdf
    • http://zurabutodiriwa.22web.org/banira.pdf
    • https://nevomunetis.weebly.com/uploads/1/3/0/7/130740414/6287596.pdf
    • https://vorusasu.weebly.com/uploads/1/3/2/7/132740845/7820249.pdf
    • http://janusadow.mygamesonline.org/28145754160.pdf
    • http://vifijes.22web.org/68152016806.pdf
    • https://gigemapafinul.weebly.com/uploads/1/3/1/3/131398374/sabidabidakabin_laramuriresuv.pdf
    • https://static.s123-cdn-static.com/uploads/4459645/normal_5ff0d91b83364.pdf
    • https://cdn-cms.f-static.net/uploads/4389376/normal_5fd8b2a0d7fa6.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://rozunaxomibow.epizy.com/18232079639.pdf
    • https://uploads.strikinglycdn.com/files/7606ac52-9508-4e49-8f0b-80e0a7f4ac5f/69090759686.pdf
    • http://joriboka.epizy.com/shake_your_body_mp4_song.pdf
    • https://uploads.strikinglycdn.com/files/a55a729d-7f27-4bc7-a9a2-38c17cd27d1f/difference_between_aci_318-11_and_318-14.pdf
    • http://bitenozof.atwebpages.com/gay_love_story_books_read_online.pdf
    • https://uploads.strikinglycdn.com/files/f00a67fd-d642-4777-a191-028505f23d67/nijolof.pdf
    • http://xejokipuposevel.rf.gd/biwiz.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e9c9.bin
b109bde943d152999d1fe681cfd5f6d988ba2690b3946b672a96f37031a402c7
pdf-font-stream PDF embedded font (sfnt) at offset 0xE9C9 10420 bytes
font_01_sfnt_off00010bfa.bin
498488b4925ff67f2458e8f31bf7804c2621596a3fb33988567c025187b52b5d
pdf-font-stream PDF embedded font (sfnt) at offset 0x10BFA 5276 bytes
font_02_sfnt_off00011de6.bin
37546d4ec19fae9800f33c5d34d55457692f31ad622cf842180bf583ef4da957
pdf-font-stream PDF embedded font (sfnt) at offset 0x11DE6 11048 bytes