Malicious PDF — malware analysis report

Static analysis result for SHA-256 a748563d32430f9f…

MALICIOUS

PDF

45.7 KB Created: 2020-04-23 09:25:53 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 7d1fbc96f6b0ba37e1eb26244a6328a7 SHA-1: 5eab8bffc2b433e9dc36043de00829c99b6a4d12 SHA-256: a748563d32430f9fcb598050eee5e993c7fc7be501784493ef9c54cc27a20ce2
62 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, many of which are numerically or generically named, suggesting a link farm or SEO spam tactic. The document body text, though heavily obfuscated, contains a reference to 'Arduino mega manual pdf' and an associated URL, reinforcing the lure. The primary intent appears to be directing users to a network of websites, likely for malicious advertising, phishing, or to host further malicious content.

Heuristics 3

  • 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
  • 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://delawaretechhire.org/uploads/1/3/0/5/130588165/130588165.html#arduino+mega+manual+pdf
    • http://tweedlebeedle.com/uploads/1/3/0/5/130539981/ronudisewin.pdf
    • http://visualisecreategive.com/uploads/1/3/0/2/130271185/bemupoxapumebefore.pdf
    • http://superiorsciencesupport.com/uploads/1/3/0/5/130551057/xalosemotunumopapa.pdf
    • http://taxexterminator.com/uploads/1/3/1/4/131453414/sosotusiga.pdf
    • http://browardhealths.org/uploads/1/3/0/8/130874219/zolesopurosubo.pdf
    • http://cooksrestoration.com/uploads/1/3/0/7/130775516/wegarumoleji-kepuzude.pdf
    • http://masarapsaboston.com/uploads/1/3/0/8/130873798/napikurilugu.pdf
    • http://amksecurities.com/uploads/1/3/1/3/131379401/4041330.pdf
    • http://apneastudio.com/uploads/1/3/0/8/130814076/777763.pdf
    • http://lauren-elaine-designs.com/uploads/1/3/1/0/131070852/bedilujugip.pdf
    • http://apneastudio.com/uploads
    • 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_off00007def.bin
ead78dfa3ba1ec7bd22f5b26889d0801851f07610444af75518941e84e1817ad		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7DEF 9320 bytes
font_01_sfnt_off0000a09a.bin
83459e82cebe561b9e65dda6a09953c9e35f75e5df0fa62a624e1833cc5b8086		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA09A 1708 bytes

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