Malicious PDF — malware analysis report

Static analysis result for SHA-256 0d5aab3221fbd25e…

MALICIOUS

PDF

54.0 KB Created: 2020-03-17 16:13:51 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: fdc0a2b3107f0eaa71001789a245e4b8 SHA-1: 5800830451286fe4deb9b7b21896200e6ca1f65e SHA-256: 0d5aab3221fbd25e8debab48b3ec57d67b89f78ef1738c4bd65efbcfa60577ac
96 Risk Score

Malware Insights

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

The PDF document contains a large number of external links to various domains, as indicated by the PDF_SEO_LINK_FARM heuristic. The embedded document body text, though corrupted, contains a URL that is also present in the list of external links. This suggests the document's primary purpose is to redirect users to a network of linked content, potentially for SEO manipulation or to serve as a distribution point for further malicious activities. No scripts were extracted, but the sheer volume of external links points to a coordinated effort.

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://churchstrettontaxi.com/uploads/1/3/0/6/130620662/130620662.html#programar+control+rca+a+tv+insignia
    • http://theten.online/uploads/1/3/0/3/130379293/rinunali.pdf
    • http://www.mylooksbylex.com/uploads/1/3/0/7/130738875/donetifavukeze_pidetodupek_papasulibuja.pdf
    • http://www.kjeldtidemand.com/uploads/1/3/0/8/130874142/6745084.pdf
    • http://alpurpletaxi.com/uploads/1/3/0/6/130621592/4ffa80a.pdf
    • http://canscare.com/uploads/1/3/0/7/130775336/merejugux.pdf
    • http://cathydollbangladesh.com/uploads/1/3/0/6/130620430/fidutetab.pdf
    • http://autodiscover.lemonade-uk.com/uploads/1/3/0/4/130489123/36b4a94e64.pdf
    • http://jessenenglish.com/uploads/1/3/0/7/130739254/tumewigibanazatunes.pdf
    • http://augustaccounting.net/uploads/1/3/0/7/130776225/1097392.pdf
    • http://debphillips.org/uploads/1/3/0/4/130476378/9217454.pdf
    • http://www.anaturalworld.com/uploads/1/3/0/7/130775108/lesafiviru_visimarakelu_zorit.pdf
    • http://bosplumbing.com/uploads/1/3/0/4/130483351/7cf981a6f.pdf
    • http://onetrailapparel.com/uploads/1/3/0/5/130544694/buxedizasesaj.pdf
    • http://www.ksmithfiberart.com/uploads/1/3/0/4/130475909/wawefikaso.pdf
    • http://thechaosbrigade.net/uploads/1/3/0/6/130640033/29769.pdf
    • http://katiessweetart.com/uploads/1/3/0/3/130323196/72b85b.pdf
    • http://officesupercharger.com/uploads/1/3/0/7/130776714/3223216.pdf
    • http://www.unityofheartfalmouth.com/uploads/1/3/0/7/130740193/8309753.pdf
    • http://purejoyce.com/uploads/1/3/0/6/130639139/5727549.pdf
    • http://artonthetrail.net/uploads/1/3/0/6/130621757/e46bd63f4a.pdf
    • http://threelittlebirdsshop.com/uploads/1/3/0/6/130639368/8376988.pdf
    • http://pro-cleanwindows.net/uploads/1/3/0/7/130776196/nakivodumibolib-tinewugiteg-nabiridok-naxagapu.pdf
    • http://www.winlocalseo.com/uploads/1/3/0/6/130604370/fupukuxetejeposatu.pdf
    • http://mixfruitonline.com/uploads/1/3/0/5/130547728/2863280.pdf
    • http://merrielwestonfloraldesign.com/uploads/1/3/0/3/130379094/fodun-wozinerozas-tonizoj.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/
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000093be.bin
44c7db185b136f324d37dac51b4bb2b9a4379f2c0d9a1929f887c2a8957dc425		 pdf-font-stream PDF embedded font (sfnt) at offset 0x93BE 8516 bytes
font_01_sfnt_off0000b369.bin
779aa567746046747dac965df7fdfb06ff632674a0a99ce247a327bf89f0fa63		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB369 16036 bytes

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