Malicious PDF — malware analysis report

Static analysis result for SHA-256 d027f4091dff62a1…

MALICIOUS

PDF

36.4 KB Created: 2020-03-10 05:47:50 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: d317d864df906231679fe57653c76ea7 SHA-1: 9a38f052d776310e985f335c107a08dd33316d00 SHA-256: d027f4091dff62a10a44d6edb3c7cfd8beccaa4b8a26916cecba73dba58f3738
94 Risk Score

Malware Insights

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

The PDF document contains a large number of external links, many of which are hosted on newly created domains and appear to be part of a link farm. The document body, though partially obfuscated, suggests a lure related to 'sample promissory note for personal loan philippines'. The primary intent appears to be directing users to malicious websites through these links, potentially for phishing or malware distribution.

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://bet365youhui.br3h.com/uploads/1/3/0/8/130874141/130874141.html#sample+promissory+note+for+personal+loan+philippines
    • http://ellegreen.com.au/uploads/1/3/0/6/130621938/7508157.pdf
    • http://www.sosimplydarling.com/uploads/1/3/0/6/130605133/0d24e.pdf
    • http://www.flamingokidom.com/uploads/1/3/0/2/130270869/4335498.pdf
    • http://tmctouch.tech/uploads/1/3/0/5/130550855/zakevezegufi-pepewagabenod.pdf
    • http://illinoisbadminton.com/uploads/1/3/0/4/130475928/dupaxofidemema-tediwa.pdf
    • http://advertisesozo.com/uploads/1/3/0/5/130539002/8426808.pdf
    • http://slaughterhousefivecappenglish.com/uploads/1/3/0/6/130604313/6628868.pdf
    • http://academyofintegratedtherapies.com/uploads/1/3/0/5/130550681/bce016cc21006.pdf
    • http://stjohnbaptistdelasalle.com/uploads/1/3/0/7/130740190/nisix.pdf
    • http://poppies-daycare.co.uk/uploads/1/3/0/5/130588605/719a884f.pdf
    • http://www.haverhilldogwalkers.com/uploads/1/3/0/4/130493143/c9e9dbfb386.pdf
    • http://www.bigcoffeecup.com/uploads/1/3/1/0/131070401/rifikesidapirij_rolir_gekojiboguxo.pdf
    • http://141592.info/uploads/1/3/0/7/130775986/nijuvixenid.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_off00006634.bin
82c7b312c33049bba4e056629e2eaea65a1c074f5080e1683597a50be2820946		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6634 7748 bytes

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