Malicious PDF — malware analysis report

Static analysis result for SHA-256 a63ab1516d7e2829…

MALICIOUS

PDF

36.2 KB Created: 2020-04-18 14:49:44 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 409cfe996fceb848da3ce7c1cee881ec SHA-1: 522618134008bc1da219a8763e4dd7e9c8d27bb1 SHA-256: a63ab1516d7e2829404872b2aeba6227907a0390ec38bd986c15dee0a29f3562
62 Risk Score

Malware Insights

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

The PDF file contains numerous external links, a common tactic for SEO poisoning and distributing malware. One of the embedded URLs, 'http://qcfuelgear.com/uploads/1/3/0/3/130323208/130323208.html#java++for+windows+32+bit', suggests a lure for users seeking Java software. The heuristic 'PDF_SEO_LINK_FARM' further indicates a large number of external links, reinforcing the malicious intent.

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://qcfuelgear.com/uploads/1/3/0/3/130323208/130323208.html#java++for+windows+32+bit
    • http://autismgroup.org/uploads/1/3/0/6/130639936/mazanivamexodad-tefajata.pdf
    • http://kerygmapittsburgh.com/uploads/1/3/0/6/130639241/c878bded32.pdf
    • http://dtxcuts437.com/uploads/1/3/0/9/130969143/fbafd57640.pdf
    • http://sabrinastoptalking.com/uploads/1/3/0/7/130776276/b1e71bf144.pdf
    • http://prestigetile.net/uploads/1/3/0/2/130287229/2403548.pdf
    • http://moldinghands.com/uploads/1/3/1/6/131606039/sepoxeluwu.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_off000066f4.bin
7b5d79d85a0188902df657c3e9d8a0d4a1acbb1e4bcdea96a4e9e88e5faf2f39		 pdf-font-stream PDF embedded font (sfnt) at offset 0x66F4 7832 bytes

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