Malicious PDF — malware analysis report

Static analysis result for SHA-256 5eb97187c1f2a219…

MALICIOUS

PDF

37.8 KB Created: 2020-03-29 04:01:53 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 2cfd0db74b246eb3ae3c830179ac25f1 SHA-1: 4b94dab69ddbb6e18f28bcacdd44b7585a58c4d3 SHA-256: 5eb97187c1f2a21944187204518d7b94ff4b6730a0ab66e39c57e633a310eb86
96 Risk Score

Malware Insights

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

The PDF contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic, suggesting a link farm or SEO manipulation tactic. The embedded URLs point to various domains, likely serving as lures or hosting further malicious content. While no scripts were explicitly extracted, the PDF structure and numerous external links indicate a malicious intent to redirect users to potentially harmful websites.

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://74-123-76-25.mgwnet.com/uploads/1/3/0/7/130776386/130776386.html#albert+bandura+theory+explained
    • http://oxfordeducation.org/uploads/1/3/0/8/130874039/7bb2c76cff2.pdf
    • http://q8caad.com/uploads/1/3/0/5/130590108/5577474.pdf
    • http://wchahillclimb.com/uploads/1/3/0/3/130379475/bcc30736.pdf
    • http://makeituniquelyyoursgifts.com/uploads/1/3/0/6/130621682/vimeg.pdf
    • http://primetimeperformance.info/uploads/1/3/0/8/130874629/fivowunekip-disulere.pdf
    • http://www.allureimagesboutiquephotography.com/uploads/1/3/0/3/130379841/wadimab.pdf
    • http://prettywithpreee.com/uploads/1/3/0/4/130483236/f3e5d16a58e5.pdf
    • http://csparling.com/uploads/1/3/0/3/130323835/6e2101509e4.pdf
    • http://raijunshop.com/uploads/1/3/0/5/130545484/7879905.pdf
    • http://www.vuongglobal.com/uploads/1/3/0/6/130620930/pawovategov.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_off00006b6d.bin
15e653185dedf75c30f2188a7c5a31112c3b67f5a1f134cee0befb792969930a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6B6D 8036 bytes

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