Malicious PDF — malware analysis report

Static analysis result for SHA-256 9f9e1f0be332ff84…

MALICIOUS

PDF

87.9 KB Created: 2021-04-06 01:10:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: aeaf7becadb8e11c9271217278e51b95 SHA-1: 79e1395e20753eb3d70fc7d426d0ad3af32148ac SHA-256: 9f9e1f0be332ff843b3720fd8d0390ce2df86e9229b7a4721f5c5120d3a44b16
96 Risk Score

Malware Insights

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

The PDF contains an embedded URI pointing to a suspicious domain, identified by heuristics and a machine learning classifier as malicious. ClamAV also detected this file as a phishing trojan. The presence of an external URI suggests an attempt to redirect the user to a malicious site, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://golowaki.ru/wix?keyword=fan+dance+chinese
    • https://cdn-cms.f-static.net/uploads/4377905/normal_6028262cf2ecd.pdf
    • https://natitapa.weebly.com/uploads/1/3/1/3/131379406/1472625.pdf
    • http://gigurokubi.66ghz.com/jijilokabukilisuka.pdf
    • https://dafizigupiteg.weebly.com/uploads/1/3/4/4/134492389/5611f.pdf
    • http://wuxijuvusif.22web.org/xupofozegetogigop.pdf
    • http://kawasus.scienceontheweb.net/10161519615.pdf
    • https://static.s123-cdn-static.com/uploads/4422144/normal_5fc74de8b31bb.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/bc1e0d7c-6537-46a8-a428-118638d6bb97/pukurefijaje.pdf
    • http://natadomemorad.epizy.com/bahama_breeze_nutrition_facts.pdf
    • http://dafotefadi.epizy.com/lg_inverter_direct_drive_7kg_user_guide.pdf
    • https://s3.amazonaws.com/bizamesuwepe/cccam_2019_free_apk.pdf
    • https://uploads.strikinglycdn.com/files/ed1a78df-ef65-4cad-bd1a-b4410eaf0259/ford_4500_industrial_backhoe_parts.pdf
    • https://uploads.strikinglycdn.com/files/e5d8d88e-eb94-475f-b780-8c2af9ff264f/jalarugesujidosuk.pdf
    • https://uploads.strikinglycdn.com/files/97b66e40-b862-4841-9d62-310f20a23baf/kagagalex.pdf
    • http://ziwemasux.myartsonline.com/radio_samochodowe_sony_xplod_bluetooth.pdf
    • https://uploads.strikinglycdn.com/files/8437f92c-e6bc-4416-913b-56aef4f2154f/ensayo_literario_de_la_gallina_degollada.pdf
    • https://s3.amazonaws.com/zedilegol/honeywell_space_heater_360_manual.pdf
    • https://s3.amazonaws.com/neporezofov/8_parts_of_speech_quiz.pdf
    • https://s3.amazonaws.com/gulapore/57461239494.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/
    • https://savannah.gnu.org/projects/freefont/
    • http://www.gnu.org/licenses/
    • http://www.gnu.org/copyleft/gpl.html
    • http://scripts.sil.org/OFL
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e886.bin
c6acebe3750ab55c09714fa1b34f6c70ddae3ce202e1a088ffcbc34adab53285		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE886 6588 bytes
font_01_sfnt_off0000f900.bin
afc6a156d232fdc962835aa1a3336b6c1a02a65cedca07c00a63a7a17a646df0		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF900 4852 bytes
font_02_sfnt_off00010975.bin
f637a89180103d17d0f872b03f99cb7ed76fac7482e283b155541c999e9a8add		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10975 2144 bytes
font_03_sfnt_off00011380.bin
41402889657254af68d56d44eac2e057f4251eb216f7d9e5edb365cb0bcd8e95		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11380 11940 bytes
font_04_sfnt_off00013c3a.bin
0216150ac0e5ade23b072752459620ec704bdac01526bfbadd96d51f96873ef3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13C3A 16168 bytes

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