Malicious PDF — malware analysis report

Static analysis result for SHA-256 033c362155a8576b…

MALICIOUS

PDF

95.3 KB Created: 2021-04-04 04:14:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7308304aa8cd01833ee43b8550df14b0 SHA-1: 5aaf0b5a1806173bf3fd3d8316ee8c724b2359c0 SHA-256: 033c362155a8576bfa4234abbb4377d4e90eb1ab0006e42a77b0bb9088c87e32
156 Risk Score

Malware Insights

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

The PDF contains numerous external links, with a significant number pointing to suspicious domains, indicating a link farm or phishing attempt. The ML classifier and ClamAV detection strongly suggest malicious intent. The document body, though heavily obfuscated, contains keywords related to 'fitness simulator script' and the authoring application 'wkhtmltopdf', suggesting a lure to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

Heuristics 5

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://mezovuduw.ru/wix?keyword=fitness+simulator+script+v3rmillion
    • http://detonic-official.website/dazobefesudibudufojajou8sj3.pdf
    • http://akfb.online/zikotulc82jr.pdf
    • http://remont-pc.website/warcraft_3_reign_of_chaos__frozen_throneyvrep.pdf
    • http://changely.club/rimafuxoreworoayw5c.pdf
    • http://vidclips.design/kajujodanoxipiburivupugadqb311.pdf
    • http://bellissimo.online/bigarag9aium.pdf
    • http://safetymirrors.xyz/does_samsung_a10_have_qi_chargingvp7jg.pdf
    • http://fdvsefwfrw.space/554268480785o499.pdf
    • http://creditinquiry.info/303113358955r5q7.pdf
    • http://construt.site/ipad_mini_5_price_in_pakistan_256gbisyab.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://a72a44ae-2aae-4d6a-a6c4-235301d0a62e.filesusr.com/ugd/57436b_9b0f5a39d6ef48578aa2165006529233.pdf?index=true
    • https://uploads.strikinglycdn.com/files/1cecdbc5-e97f-4bc1-8b58-569eb4667ec8/netgear_powerline_av500_wifi_manual.pdf
    • https://uploads.strikinglycdn.com/files/e1cb9215-f7ec-42f9-9ea9-98b6e3e0698f/bewefodililolozupuzupesi.pdf
    • https://uploads.strikinglycdn.com/files/8a7da9d3-ef40-4e6c-96e6-bcdaba338735/how_do_i_use_google_cardboard_app.pdf
    • https://uploads.strikinglycdn.com/files/8a8eacb4-6309-4501-9e23-de93ac975466/58960501631.pdf
    • https://uploads.strikinglycdn.com/files/72784dda-34f6-4384-a059-d80c6014aba4/futuzejenaxoroputopokid.pdf
    • https://uploads.strikinglycdn.com/files/8b921e6d-d0cf-4fd5-8a88-2a13887e4e20/nebekuponepad.pdf
    • https://uploads.strikinglycdn.com/files/6c22f67e-1aef-462d-b461-2fb32b0ee9ee/alpha_werewolf_dnd_5e.pdf
    • https://311919ef-92bb-434b-a93e-382c1a5e2e65.filesusr.com/ugd/c893b4_2ab61310d2384e37b96bb1d6ee02a43a.pdf?index=true
    • https://uploads.strikinglycdn.com/files/6e936b5d-9a40-4606-a8bf-fd089527806e/bopurikowudu.pdf
    • https://uploads.strikinglycdn.com/files/053d5779-8635-4afb-98c2-8d722192e982/prototype_design_pattern_in_java_with_realtime_example.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
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010ad1.bin
e7539889959d89ef48dd3879026e7883cde6bd8d04fc6ceac819befd82d211ef		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10AD1 5256 bytes
font_01_sfnt_off00011ca0.bin
abff4814fb11886b6fb15803bd27df2ab74945bb98238a3d4aa59c2186626972		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11CA0 6852 bytes
font_02_sfnt_off00013010.bin
c69dd0acb5732117f4ceebadae336fa35242af87a4ab3a4a60f0df2c3b30382b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13010 11392 bytes
font_03_sfnt_off0001571a.bin
02823c8c9c7ac19b538249a2b021f81f2a6f1448d26385205737054e8e12406d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1571A 16428 bytes

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