Malicious PDF — malware analysis report

Static analysis result for SHA-256 715b85416a10eee0…

MALICIOUS

PDF

75.3 KB Created: 2021-02-10 20:40:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-31
MD5: ee76a6ab1a7514397701bd1a0ec68902 SHA-1: 791ca5829189a4d7d0ba4ff97ed4385155df7d92 SHA-256: 715b85416a10eee0343fd87e78c4bdc5ea78a89e54da476c4ebc2f376a034468
186 Risk Score

Malware Insights

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

This PDF file was identified as malicious by a ClamAV signature and an ML classifier. It contains a large number of external links, many pointing to disposable domains hosted on Weebly, suggesting a link farm or SEO manipulation tactic. One of the primary links directs to a URL with a 'bain capital' query term, indicating a potential lure for financial information or phishing.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://jacksth.ru/aws?utm_term=bain+capital+global+private+equity+report PDF link annotation
    • https://gapidegit.weebly.com/uploads/1/3/1/3/131379699/tovizefalojetuti.pdfIn PDF document text
    • https://pavibizad.weebly.com/uploads/1/3/0/7/130740264/71887d20629a.pdfIn PDF document text
    • https://pujeradix.weebly.com/uploads/1/3/2/6/132695809/nomofoxoxov-piwopo-desinutekug.pdfIn PDF document text
    • https://kezuvuxir.weebly.com/uploads/1/3/2/8/132814306/kejogofa.pdfIn PDF document text
    • http://lnstagramverifiedsbadgeforms.com/harry_potter_hogwarts_acceptance_letter_template2kzx4.pdfIn PDF document text
    • https://gasimela.weebly.com/uploads/1/3/1/3/131398285/jawadog.pdfIn PDF document text
    • http://abreudesigns.com/rodevalemixetedovibewudevel1y6.pdfIn PDF document text
    • https://zugimawaxudal.weebly.com/uploads/1/3/1/4/131410952/9850420.pdfIn PDF document text
    • https://xigeworimejol.weebly.com/uploads/1/3/1/4/131483719/puzugot.pdfIn PDF document text
    • https://furureseseruwa.weebly.com/uploads/1/3/4/4/134481841/e9e13b.pdfIn PDF document text
    • https://farazekij.weebly.com/uploads/1/3/4/3/134379469/58a7a2c90.pdfIn PDF document text
    • https://mukeremu.weebly.com/uploads/1/3/4/3/134316251/550483.pdfIn PDF document text
    • https://dodikajopofibu.weebly.com/uploads/1/3/4/7/134704264/b16b4f4dd8683.pdfIn PDF document text
    • https://xadifera.weebly.com/uploads/1/3/1/4/131438156/3887961.pdfIn PDF document text
    • http://garantiya62.ru/wasteland_video_game_freeq9kyx.pdfIn PDF document text
    • https://jaxedafotonomut.weebly.com/uploads/1/3/4/8/134885779/d728a.pdfIn PDF document text
    • https://popagupo.weebly.com/uploads/1/3/1/4/131407300/begozezopeda_nagaluwafademar.pdfIn PDF document text
    • https://nefosedinipal.weebly.com/uploads/1/3/4/6/134698739/bf97bc2f8e1a4ea.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/wusigipufuvowix/lenin_materialismo_e_empiriocriticismo.pdfIn PDF document text
    • https://s3.amazonaws.com/mizeteb/58691907970.pdfIn PDF document text
    • https://s3.amazonaws.com/nerugiraxura/vizio_sound_bar_2._1_36_manual.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d804.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD804 5280 bytes
SHA-256: 21aee63282d15228ad06f420c0110839710f25580a3881379dfbb2b6022e5758
font_01_sfnt_off0000ea06.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA06 11196 bytes
SHA-256: a18ce22eebf1fa226f1bfb7a18a99e04b19db8f0c87d076c66f0e565bf542b19
font_02_sfnt_off00010fcb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10FCB 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361