Malicious PDF — malware analysis report

Static analysis result for SHA-256 a327760a1d2aadcf…

MALICIOUS

PDF

36.3 KB Created: 2020-03-15 02:46:24 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: dc692a9b6df9d5433c9c0af2619cdbf8 SHA-1: c9fb2527d6ad9756557ae6dee30dfec1421c98f8 SHA-256: a327760a1d2aadcf678add157afa5cf11e5fd8ed3029f137d1c1cc2b0da65458
94 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious File

The PDF file contains numerous links to external websites, characteristic of a link farm or SEO spam campaign. The document body, though partially obfuscated, contains references to a "Lamborghini imran khan video song" and includes multiple URLs, suggesting a lure to potentially malicious content. The ML classifier strongly indicated maliciousness, and the PDF_SEO_LINK_FARM heuristic confirms the presence of a mass external link farm.

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://sta-66-99-58-218.ladse.org/uploads/1/3/1/0/131071312/131071312.html#lamborghini+imran+khan+video+song
    • http://peoniesevents.com/uploads/1/3/0/5/130588875/9707884.pdf
    • http://mail.tiembanhkem.com/uploads/1/3/0/8/130874223/rixegug.pdf
    • http://vdmcwholesale.com/uploads/1/3/0/4/130476050/nevedamefa.pdf
    • http://bartenderbitch.com/uploads/1/3/0/8/130874478/savexenaramotepu.pdf
    • http://besthairextensionswilmington.com/uploads/1/3/0/6/130621021/nuzotabitokap.pdf
    • http://melomania-mx.com/uploads/1/3/0/8/130814247/e9853.pdf
    • http://westerncanadasolar.com/uploads/1/3/0/8/130874269/liruguva.pdf
    • http://hostmaster.identityremix.com/uploads/1/3/0/6/130620605/sumidamo.pdf
    • http://7sevensteps.com/uploads/1/3/0/5/130588906/rimapadigorubakil.pdf
    • http://www.mymoxiehair.com/uploads/1/3/0/4/130435870/9985180.pdf
    • http://capperlab.com/uploads/1/3/0/7/130774990/97f886c47101.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000063a4.bin
0a1750e9aafdbb1c76cea6ccb7e6f2272c7a85d399ae1a000ba2f802f82b5f8a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x63A4 8576 bytes

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