Malicious PDF — malware analysis report

Static analysis result for SHA-256 3a3ac26598e3bd77…

MALICIOUS

PDF

74.3 KB Created: 2021-05-15 15:24:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f4990fc3b6df9cb8bdb115f1fc262734 SHA-1: b9c8075c8e25d6fe46972ee3dde62728bc4746c2 SHA-256: 3a3ac26598e3bd77c809d7e4f970c516f7436025919fa9fc19994bbb9e8a6330
156 Risk Score

Malware Insights

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

The PDF file contains numerous external links, with one prominent URL pointing to 'https://ponafet.ru/strik?utm_term=hamlet+play+modern+english'. ClamAV detection as 'Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0' and ML classification strongly indicate malicious intent. The document body, though heavily obfuscated, suggests a lure related to 'Hamlet play modern english', likely to trick users into visiting the malicious URL.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://ponafet.ru/strik?utm_term=hamlet+play+modern+english
    • https://lulezurikut.weebly.com/uploads/1/3/4/6/134667205/mowopametizivo-vububapo.pdf
    • https://zosujugopaw.weebly.com/uploads/1/3/4/5/134509911/wivomefawoximi.pdf
    • https://zovarufegurer.weebly.com/uploads/1/3/4/6/134625168/4ce13b5972923db.pdf
    • https://vemegerefawobe.weebly.com/uploads/1/3/2/6/132682093/nabixukukovug_dojaziwite.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://0ed7c29b-d5f2-4290-8b47-add6aa38300d.filesusr.com/ugd/32a223_50f3762ab90444bea1831217b63bfcd0.pdf?index=true
    • https://721ea522-a1f6-4523-903e-24b3c8014629.filesusr.com/ugd/5a834c_febfbea27c0849c4ba6363d226341b1e.pdf?index=true
    • https://s3.amazonaws.com/pasawexawinogad/jitilirakesarejajajawib.pdf
    • https://3c199e1c-ff83-4553-a351-db1e9419129c.filesusr.com/ugd/424a74_2a9006697f804d33aa137452780c96f6.pdf?index=true
    • http://xojodoruxima.epizy.com/diathesis_stress_model_psychology.pdf
    • https://s3.amazonaws.com/zidosozawok/how_much_is_j_prince_net_worth.pdf
    • https://cef8af8d-7071-4339-ac50-fc417d371010.filesusr.com/ugd/a89196_cd532d4c957a42a6b6041d9e4911e83a.pdf?index=true
    • https://57eba762-b826-4879-8d7a-7f480aba2934.filesusr.com/ugd/e89c2b_6f32a071793e4b57b1ade6f639c0ad30.pdf?index=true
    • http://rininimesoxino.rf.gd/behavioral_economics_for_dummies_free.pdf
    • https://a0e9597c-cfbb-4fc1-b0e0-47ed6411b148.filesusr.com/ugd/24269e_43511d212e0c43b580033d3f5f3fda21.pdf?index=true
    • https://8d537faf-e869-4ed9-a29f-988560fab1dc.filesusr.com/ugd/0cce51_2c10e6cd8e784024924deae1a4d31696.pdf?index=true
    • https://677f84e8-2a3b-482a-8721-58d714100356.filesusr.com/ugd/086aec_e670865fe7f64408be7b720bc0d556fe.pdf?index=true
    • http://denonewozififuz.rf.gd/wow_warlock_leveling_guide_legion.pdf
    • https://c482eaa1-e3aa-4fde-9473-53ba98cc9791.filesusr.com/ugd/94322e_d10814b4a16244d288625d62e85e0d13.pdf?index=true
    • https://s3.amazonaws.com/xokebore/bhai_ji_full_movie.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_off0000e352.bin
070f79f2391d3c9f9c67ec9c4def00f2f2fe4ab28bd03002e499d0c742306981		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE352 5436 bytes
font_01_sfnt_off0000f5a9.bin
90c6879fee0194eaac31c78d38fdaf1554ca2390493354145839c2d24da8c5cb		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF5A9 11372 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.