Malicious PDF — malware analysis report

Static analysis result for SHA-256 50da0f3f834c4697…

MALICIOUS

PDF

158.8 KB Created: 2021-04-30 21:56:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: fbc619aa4953f745265d81a11f8917b8 SHA-1: 765be6c7114f65054d272879428e4cd3d05d7f6d SHA-256: 50da0f3f834c4697b9e5783566b0e5b918659d426e2a5df66eb73898c3c01969
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a lure related to 'ic38 exam questions and answers pdf in marathi' and includes multiple external URLs, one of which is directly associated with a phishing lure. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9975

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://kuzutuzo.ru/strik?utm_term=ic38+exam+questions+and+answers+pdf+in+marathi
    • https://cdn.sqhk.co/kopupelek/Srhiq7Y/rizenomugubuwelivisetibe.pdf
    • https://cdn.sqhk.co/kefivaxepaj/jijghcr/ketovemepomudorisazewam.pdf
    • https://cdn.sqhk.co/linaxezo/hf5hdAk/log_thrower_mod_apk_latest_version.pdf
    • https://cdn.sqhk.co/linaxezo/KjgGz4p/shuddering_movement_definition.pdf
    • https://cdn.sqhk.co/rojozedofaf/ibgc1ih/nazexajosetokubejodu.pdf
    • http://gedirobidepud.scienceontheweb.net/dapemox.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://fedorahosted.org/lohit
    • https://uploads.strikinglycdn.com/files/7268f2d3-83ff-466c-a93b-6fb7993c9cd3/educational_psychology_books_by_indian_authors.pdf
    • https://uploads.strikinglycdn.com/files/1a852ba8-2e6d-4aac-b50f-afbbce6cb0a2/battery_tender_waterproof_800_ma_12_volt.pdf
    • https://uploads.strikinglycdn.com/files/4564733a-cbae-4c40-972a-c2c9afec485c/does_norse_mythology_still_exist.pdf
    • https://dd7ee03d-3646-4e01-a1e1-4c0a7e2c9e57.filesusr.com/ugd/d7ba0f_f0c6077768c148e2984836e78673c11c.pdf?index=true
    • http://dipuvomefig.epizy.com/80769075029.pdf
    • http://xenemusexo.epizy.com/year_3_maths_problem_solving.pdf
    • http://netawuwimirixor.onlinewebshop.net/personal_statement_for_masters_example.pdf
    • https://uploads.strikinglycdn.com/files/c84853aa-6076-4e27-8ac0-03e7ca6cd853/star_trek_enterprise_archer_und_tpol.pdf
    • https://uploads.strikinglycdn.com/files/4754fa77-40c7-4d50-992e-4abc8092bf36/snapper_pro_s200xt_parts_manual.pdf
    • https://uploads.strikinglycdn.com/files/75ff0870-9d21-43b4-8124-d6e22fb0e13c/what_is_the_number_one_selling_essential_oil.pdf
    • https://uploads.strikinglycdn.com/files/856b9631-ee93-4fa9-b848-2036781e8481/tevatebar.pdf
    • https://73f4d879-981c-49fe-abc7-520f36a14a84.filesusr.com/ugd/b77b08_3736d953386e4d2aa0af904527b4f6dd.pdf?index=true
    • 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 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001e41b.bin
d369c253842d7ca0b1e33efaead8720e6f34827f493d1f7418bc4d5dc77b8ee0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1E41B 5944 bytes
font_01_sfnt_off0001f83d.bin
dbaab8dcf32bfe64cb008f34eb54f5316f62236e8dffe3de49b44225404383a5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1F83D 2656 bytes
font_02_sfnt_off0002033b.bin
0cd8706d3034fdba8c087ccf8674b1235c5b2aab07b6f54208a326a843890eac		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2033B 3832 bytes
font_03_sfnt_off00021240.bin
0a56c9933fa09c3fc7228c6773489ca651d64004dce030a0f6b9b0f2339815e6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x21240 12180 bytes
font_04_sfnt_off00023bc2.bin
d3c05c00aff5d4d77e260fb14ee0cea39b60c96b4766dd8c7def1242f3b1a276		 pdf-font-stream PDF embedded font (sfnt) at offset 0x23BC2 16168 bytes
font_05_sfnt_off00025125.bin
5aeca7a00c7ee05a3151d066bd8a675127f4ed8ef85afd557e9cb80d24a3f02c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x25125 8212 bytes

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