Malicious PDF — malware analysis report

Static analysis result for SHA-256 138c55e01a117950…

MALICIOUS

PDF

38.9 KB Created: 2020-03-24 02:14:55 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: e52dceb9a1fa7b13cff8f06e09a9a7a8 SHA-1: 62245e07dbd73e14c6910d81e6afab739b68592c SHA-256: 138c55e01a1179508b2f56a7a004fabac062f223a5e17aa7d8717944a976cbc4
96 Risk Score

Malware Insights

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

The PDF contains numerous external links, many of which are structured as a link farm, suggesting an attempt to manipulate search engine results or redirect users to malicious content. The embedded document body text, though partially corrupted, includes a URL that points to a page with a dictionary theme, likely a lure. The ML classifier strongly indicated maliciousness, and the PDF structure itself is flagged for containing a mass of external links.

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://wwwdaimondholiday.com/uploads/1/3/0/9/130969141/130969141.html#diccionario+espa%C3%B1ol+que+significa+ignoto
    • http://kidsforchristclub.com/uploads/1/3/1/1/131163955/diladibowivew.pdf
    • http://tannerromleski.com/uploads/1/3/0/6/130603978/muxidanavokege.pdf
    • http://www.deadballapparel.com/uploads/1/3/0/6/130604982/sinake.pdf
    • http://westfargomn.com/uploads/1/3/0/5/130543121/goxekumonajowor.pdf
    • http://riversideweddings.net/uploads/1/3/0/3/130313265/jatoboruguru-dovuda-vebimexopun.pdf
    • http://prairie-princess-boutique.mynewonline.store/uploads/1/3/0/3/130323407/65abd3821d.pdf
    • http://juliepatey.com/uploads/1/3/0/2/130288757/zamobijofexumixax.pdf
    • http://mrgatewoodcody.com/uploads/1/3/0/5/130542908/343172835.pdf
    • http://missdwiggles.com/uploads/1/3/0/7/130775727/digibexepi_gilurare.pdf
    • http://www.templewomengored.com/uploads/1/3/0/3/130323900/d057d166cee.pdf
    • http://www.losadaspins.com/uploads/1/3/0/5/130543588/pobaja_rewivisibanel.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_off00006b7b.bin
0ea953c9ff270b17c9482220984fb52c1c0c62493bf362be461376a1684292a1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6B7B 9192 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.