Malicious PDF — malware analysis report

Static analysis result for SHA-256 5e24bffe63a8284f…

MALICIOUS

PDF

34.0 KB Created: 2020-06-08 14:54:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-09-24
MD5: 1b801cb46735ac1c3a0f5a586ded3bb6 SHA-1: d5c7e87e5b64dc24cf33ba5d693db3ea71d9267d SHA-256: 5e24bffe63a8284f5c01c79340519e30cf75b61d620536d5e6d16459b720a095
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded external links, identified by the PDF_SEO_LINK_FARM heuristic. These links point to various domains, suggesting a link farm or SEO manipulation tactic. The ML classifier also strongly indicated maliciousness. No scripts were extracted, but the sheer volume of external links suggests a malicious intent to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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://webmail.losangelesworkingdogs.com/uploads/1/3/0/6/130603749/130603749.html#luseta+keratin+%25E0%25B9%2581%25E0%25B8%258A%25E0%25B8%25A1%25E0%25B8%259E%25E0%25B8%25B9 PDF link annotation
    • http://hi5.business/uploads/1/3/1/8/131856184/9069894.pdfIn PDF document text
    • http://thesistermum.com/uploads/1/3/0/5/130550716/pizutirinibiju_wemopado_powozomalix.pdfIn PDF document text
    • http://jpwriteandedit.com/uploads/1/3/0/6/130639224/a720a281950b.pdfIn PDF document text
    • http://brooklynbikecrew.com/uploads/1/3/1/8/131857315/5803535.pdfIn PDF document text
    • http://chrisjamescomedian.com/uploads/1/3/0/2/130274154/1525529.pdfIn PDF document text
    • http://periedesarma.com/uploads/1/3/2/3/132302978/495120.pdfIn PDF document text
    • http://westport-medispa.net/uploads/1/3/0/4/130488810/xiboxizokoxusil_keburon.pdfIn PDF document text
    • http://www.opentle.orgIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://gijatok.files.wordpress.com/2020/06/tokuwelakopeviris.pdfIn PDF document text
    • https://gizopivij.files.wordpress.com/2020/06/77803161194.pdfIn PDF document text
    • https://moxijixo678822952.files.wordpress.com/2020/06/gosirurodiz.pdfIn PDF document text
    • https://jupurugasu.files.wordpress.com/2020/06/lorisokama.pdfIn PDF document text
    • https://gusabuj.files.wordpress.com/2020/06/2474048095.pdfIn PDF document text
    • https://gowunexinelo.files.wordpress.com/2020/06/91099935962.pdfIn PDF document text
    • https://jewokiwisaze.files.wordpress.com/2020/06/namirani.pdfIn PDF document text
    • https://bewurusigew.files.wordpress.com/2020/06/mipifuwoxusuradewovu.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://www.gnu.org/licenses/gpl.htmlIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Related samples 1

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

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000049b0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x49B0 6452 bytes
SHA-256: d057e0da0a6c42a539c4ab352715f6b5e0288a1366ad50727fbcf94a92561123
font_01_sfnt_off00005ab4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5AB4 9348 bytes
SHA-256: bc1851f266cfe786b83f92f11336af265fd70e67c47b82306e963a1371fd00d9

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