Malicious PDF — malware analysis report

Static analysis result for SHA-256 eb992ad296ee5da5…

MALICIOUS

PDF

79.6 KB Created: 2021-04-26 09:54:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-24
MD5: 7dfc6658e0cde575849ac253764f9b0f SHA-1: 80d53619660ca71a9fd9e08127071ad1f79d60ec SHA-256: eb992ad296ee5da5cef361b51670ffd89aa8cb979c63fa01326d81062d7ef30a
164 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics, including a critical ML classifier and ClamAV detection, indicating malicious intent. The document body, though partially corrupted, contains a lure related to a child's rash, combined with an external URI pointing to 'lozipotod.ru'. This suggests a phishing or malware distribution attempt, likely using a spearphishing attachment as the initial access vector. The presence of numerous external links, some benign and some unknown, further supports the link farm heuristic.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://lozipotod.ru/strik?utm_term=why+does+my+child+have+a+rash+on+her+face PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4485004/normal_5ffdf0d49b9e7.pdfIn PDF document text
    • http://dodemawaj.iblogger.org/zomakatuxov.pdfIn PDF document text
    • https://womerakuketuzal.weebly.com/uploads/1/3/1/8/131856195/4303315.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4387417/normal_6001e31a0ca35.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4452624/normal_60246fe8a068b.pdfIn PDF document text
    • https://novomuzedideb.weebly.com/uploads/1/3/1/4/131406537/vupexuwono.pdfIn PDF document text
    • http://lulelil.22web.org/cheats_for_gta_sa_on_android.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4457590/normal_602c944028df9.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://f37c3615-20b0-4e70-b1e7-2acf34113780.filesusr.com/ugd/1e533a_10e4f763278741e09540b33db72678f7.pdf?index=trueIn PDF document text
    • http://nanaxaj.rf.gd/6717999974.pdfIn PDF document text
    • https://s3.amazonaws.com/jizubisetebof/junior_football_glove_size_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/legapatatezisa/sumusenutijorokegu.pdfIn PDF document text
    • https://40e214c1-1950-44e8-a195-e2c6eeb23253.filesusr.com/ugd/a517f4_af12fe820a374b03a8605c3bf108f01e.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/rufonali/what_happened_when_the_carbon_dioxide_in_exhaled.pdfIn PDF document text
    • https://s3.amazonaws.com/vebogotexaf/jeripuwoni.pdfIn PDF document text
    • https://s3.amazonaws.com/zatasipezeg/sejewasoro.pdfIn PDF document text
    • https://ad0d0dbb-669b-46a9-85df-79487014a0f3.filesusr.com/ugd/00d95d_04340e01b12549359c873d94a75aa339.pdf?index=trueIn PDF document text
    • https://70010cfe-69b1-4fe9-a336-bdfe2418dc1e.filesusr.com/ugd/f1d680_86953ad11a7d4c708b8e9c997ee9e892.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/bajapovogam/disizinekabikidemifa.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f9bd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF9BD 5436 bytes
SHA-256: cdfc4d531a86ceb8b3881647be408b4753e5d8f0145570993763e4d7753e0c74
font_01_sfnt_off00010c29.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10C29 10852 bytes
SHA-256: 8dddf33f478728930b253df47c66b5b7d38a1bf67d381a944a2c1f323587b540

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