Malicious PDF — malware analysis report

Static analysis result for SHA-256 b85f829b6909c478…

MALICIOUS

PDF

79.0 KB Created: 2021-03-29 18:52:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5f444226b862c68ee994632ffd06d122 SHA-1: 7046802aca46c9540e839188bf5ab7d347a158fb SHA-256: b85f829b6909c4785a7775e9f75758f1eeb0cf527a62c58d23f0832ed090ade4
96 Risk Score

Malware Insights

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

The PDF document contains an embedded URI pointing to a malicious domain, identified by heuristics and a machine learning classifier as malicious. The document body, though heavily obfuscated, suggests a lure related to a 'weedeater lawn mower manual'. The presence of multiple suspicious URLs indicates a phishing or malware distribution attempt. No scripts were extracted from this sample.

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://resalured.ru/wix?keyword=weedeater+22+lawn+mower+manual
    • http://instahelpforbusiness.com/46190684928a6hdi.pdf
    • https://sozikusek.weebly.com/uploads/1/3/4/3/134333331/xurenesira.pdf
    • http://gakagebir.mypressonline.com/genuwafeviromebigapotor.pdf
    • http://fuxanujibiz.mygamesonline.org/jae_prynse_half_has_never_been_told_lyrics.pdf
    • https://kasezikibojeg.weebly.com/uploads/1/3/1/8/131871727/gazabufid.pdf
    • http://ruginegil.22web.org/definicion_de_dinamica_del_movimiento_circular_uniforme.pdf
    • https://cdn.sqhk.co/kobadaxo/igyjeQt/bruster_s_real_ice_cream_franchise_information.pdf
    • http://beliyden.xyz/sufonabarugixajewigohli.pdf
    • http://rojemop.iblogger.org/64318212133.pdf
    • https://cdn.sqhk.co/febapaji/hhcnJpU/gidetoranawat.pdf
    • https://mibirewisurux.weebly.com/uploads/1/3/5/3/135313447/nevuvutawiw_fatedafepu_naxenemebikelag.pdf
    • http://help-mediasupport.com/diridijuwidivexuvokixokuc86u9.pdf
    • http://lologunaw.mygamesonline.org/kuzodam.pdf
    • https://pigamudabuv.weebly.com/uploads/1/3/4/2/134235231/7e3fec66e47bff0.pdf
    • http://dibosezufo.getenjoyment.net/72361773784.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://aa5f33e9-793b-4807-a257-9eac84d314d0.filesusr.com/ugd/aa57b2_36d052c7191845659ec011ff126dce75.pdf?index=true
    • http://sudisededokop.epizy.com/zuzonubug.pdf
    • https://850a36a1-966c-46c3-86ed-e15bcb5778a7.filesusr.com/ugd/ede58b_056e7bf41bc542e8802e9fced74ecdb0.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f8e9.bin
3be629cd62c1fcfc7e323d1731f44399433a041814bff8ddc1f3f5bedee4817a
pdf-font-stream PDF embedded font (sfnt) at offset 0xF8E9 5028 bytes
font_01_sfnt_off00010a05.bin
4f66732ec383ca6c0fd2ad63b9d4d49d15c9283a22e5f34702fc95e6b7f693d3
pdf-font-stream PDF embedded font (sfnt) at offset 0x10A05 11152 bytes