Malicious PDF — malware analysis report

Static analysis result for SHA-256 d9e26e8717f077a0…

MALICIOUS

PDF

40.8 KB Created: 2020-06-19 01:14:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1b1151ed83948913d341427392f7b3a9 SHA-1: 5a87028b32d08566d42f564910bc21d78f450a5c SHA-256: d9e26e8717f077a059b11d461aaca8aa469f054e566906f6f0b9414227eec03c
94 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, many of which point to other PDF files hosted on similar domains. This behavior is indicative of a link farm or a distribution mechanism for malicious content. The document body, though partially corrupted, suggests a lure related to 'Unofficial guide to disneyland paris 2013', which is likely a pretext to drive traffic to the linked resources. The ML classifier strongly flagged this PDF as malicious.

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://lartenfete.com/uploads/1/3/1/1/131164048/131164048.html#unofficial+guide+to+disneyland+paris+2013
    • http://janellemcculloch-officialwebsite.com/uploads/1/3/0/5/130551066/708863.pdf
    • http://thewillowhouse.org/uploads/1/3/0/5/130543980/suviwurebidimu_gorukimipib_mapami.pdf
    • http://nwrenewable.com/uploads/1/3/0/5/130588403/bilebon_lakekaj_kagipeb.pdf
    • http://depuyulechengpaiming.br3h.com/uploads/1/3/1/8/131856149/ragoxazux.pdf
    • http://icecups.co/uploads/1/3/0/5/130550666/wigamax_goremupukumoki_lakarepisita_niwojorira.pdf
    • http://harborshorespaddlesports.com/uploads/1/3/1/6/131606494/61de38d.pdf
    • http://starboundpictures.com/uploads/1/3/0/5/130590257/fimadinogebisut.pdf
    • http://lcfitwell.com/uploads/1/3/1/0/131070888/lareropopiv-lavunulixibi.pdf
    • http://macrotopia.com/uploads/1/3/1/3/131398182/5429502.pdf
    • http://macrotopia.com/uploa
    • 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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006090.bin
7d825daf2fba5a1d9cc0a1f5f46c102951c67d25c8e8b14ccc6cd15ee63afc79		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6090 5788 bytes
font_01_sfnt_off00007458.bin
5ccebc9788f36e0977138cc03eb2807aed26a2053cf8c75b48197498f349fac5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7458 10164 bytes

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