Malicious PDF — malware analysis report

Static analysis result for SHA-256 ab7141e10e4a1fc5…

MALICIOUS

PDF

83.8 KB Created: 2021-06-07 05:22:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25
MD5: 4afa3b06d135129f2f4a6817214c1539 SHA-1: 3cb4c4021906c55fc909f8c6c4a355ceb139378c SHA-256: ab7141e10e4a1fc5548b7e08fd7a5aeaeab646cdcca12ba9710e130d0f3e7a85
186 Risk Score

Malware Insights

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

This PDF document is classified as malicious and contains a large number of external links, many pointing to disposable hosting services, suggesting a link farm or phishing operation. The document body, though heavily obfuscated, appears to be a lure related to "Arya 2 dj songs telugu". The presence of numerous external links indicates an attempt to redirect the user to potentially malicious websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://golowaki.ru/123?utm_term=arya+2+dj+songs++telugu PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4366034/normal_5fefc8fbbda07.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4380411/normal_5fe39f93b67c2.pdfIn PDF document text
    • https://veretiwuwe.weebly.com/uploads/1/3/1/4/131406621/fcd8d4c98eb9ea3.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4421464/normal_5fd06bf81c08c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4461483/normal_606e525d096f4.pdfIn PDF document text
    • https://juwarojolajekol.weebly.com/uploads/1/3/4/1/134108785/d10baa23667.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370791/normal_606783cc9b44c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4489599/normal_60599ebc520d8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4480735/normal_5fe64735115c8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384295/normal_6063d4a7ec02b.pdfIn PDF document text
    • https://wifuduwelu.weebly.com/uploads/1/3/2/8/132814355/65bac0a00ed99.pdfIn PDF document text
    • https://wumigafilik.weebly.com/uploads/1/3/4/4/134492391/masodipaf.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4445337/normal_5ff5680d52255.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4482188/normal_5fd824f9a2621.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zemenifinabe.pbworks.com/w/file/fetch/144575652/10762275829.pdfIn PDF document text
    • http://wenuveraroto.pbworks.com/w/file/fetch/144717153/simulation_ionic_and_covalent_bonding_answer_key_aact.pdfIn PDF document text
    • http://mazibudikor.pbworks.com/f/organic_chemistry_formula_download.pdfIn PDF document text
    • http://buluwogot.pbworks.com/w/file/fetch/144603510/definitive_guide_to_position_sizing_van_tharp.pdfIn PDF document text
    • http://zorisomofi.pbworks.com/w/file/fetch/144710022/70941992658.pdfIn PDF document text
    • http://pazimonofe.pbworks.com/f/66016671315.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f5bb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF5BB 5292 bytes
SHA-256: 4d33e16eb156f18cd097d1adf0f565b393fbc608e091cd047e6043afaeca3eae
font_01_sfnt_off000107d7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x107D7 10688 bytes
SHA-256: 3142f7d843b9804f5864334be07dbc7aa6d9af1a5353efd9a02f85b552b47583
font_02_sfnt_off00012cc7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12CC7 16164 bytes
SHA-256: ead7fd593d7f5feef6f283420e9b55f8fa4552f107c64b0063d474dd3355abd8