Malicious PDF — malware analysis report

Static analysis result for SHA-256 1e3cb4beb71ea334…

MALICIOUS

PDF

138.2 KB Created: 2020-04-15 09:50:51 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6) First seen: 2020-08-25
MD5: 629cc3a6df895c6f356ad91584df00bb SHA-1: abfcf909866df5868bc323ac3f26bc70f60b183e SHA-256: 1e3cb4beb71ea334105a7a701dcfe4d9cb886864116b2fea25e54c0f9a2becdf
96 Risk Score

Malware Insights

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

The PDF document contains a large number of external links, many of which point to other PDF files hosted on similar domains. The document body text, though heavily obfuscated, contains a URL that appears to be part of a lure. This suggests a link farm or SEO poisoning technique designed to drive traffic to malicious sites. No scripts were extracted, limiting the analysis of direct payload execution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9226

Heuristics 4

  • 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.
  • 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 http://saintmatthewsfestival.com/uploads/1/3/1/4/131405956/131405956.html#acknowledgement+for+hotel+internship+report PDF link annotation
    • http://kunstglad.no/uploads/1/3/0/6/130605173/beviguka_nuduvig_tulotugodazux.pdfIn PDF document text
    • http://thefestivetree.in/uploads/1/3/1/4/131453793/makisalezaw.pdfIn PDF document text
    • http://octelepsychiatry.com/uploads/1/3/0/7/130775346/mevafefobas.pdfIn PDF document text
    • http://realitywhisperer.com/uploads/1/3/0/2/130289235/3233607.pdfIn PDF document text
    • http://188prospectstreetu1.com/uploads/1/3/0/4/130489044/mogemu_fupabikaturiz_zasate_wawitim.pdfIn PDF document text
    • http://scifichickmuses.com/uploads/1/3/0/4/130489499/kumipitosor-tefulevo-lijofepik.pdfIn PDF document text
    • http://begoodtoyou.net/uploads/1/3/0/8/130814104/9098427.pdfIn PDF document text
    • http://perlui.net/uploads/1/3/0/5/130551083/4473942.pdfIn PDF document text
    • http://fontawesome.iohttp://fontawesome.io/license/In PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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
    • https://fedoraproject.org/wiki/Licensing/LiberationFontLicenseIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 5

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001ceb3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1CEB3 2204 bytes
SHA-256: c3e9059b7daa6789362dfdcb047b518cb9b63dd2e2de3da16aa40aa25d149c6a
font_01_sfnt_off0001d82e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1D82E 9752 bytes
SHA-256: 1c0cd7ac7aeca18de93745095066c59409aac4659f8d8bfa9e02beee888cbd5e
font_02_sfnt_off0001fc9c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1FC9C 2640 bytes
SHA-256: ad9f5e20cc1563f79bc996ba358913dd59147f1542b3b72de44a911d64f58b2e
font_03_sfnt_off000205f8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x205F8 16076 bytes
SHA-256: 6ce32c7926c6f21db5640dc1790b79ec78d1dba01d796f7b775dba7caf5b1ad9

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