Malicious PDF — malware analysis report

Static analysis result for SHA-256 ca66eef32d3b6f8d…

MALICIOUS

PDF

72.8 KB Created: 2020-03-08 12:54:53 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 8ba0a689d929ac34dcbb3f77ce6054cb SHA-1: 017170de591c0f36ebceaa8e9c78d657b7ff103a SHA-256: ca66eef32d3b6f8d59ecfbd52d09d60dd65dc4a538975cc84eb285c8a941cf53
62 Risk Score

Malware Insights

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

The PDF document contains a large number of embedded links to external websites, many of which appear to be part of a link farm designed to artificially inflate search engine rankings. The primary lure text suggests a technical topic, "Awk and sed command in unix pdf", to entice clicks. The heuristic firings indicate this is a critical finding related to a PDF link farm.

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://www.theknowledgewarriors.com/uploads/1/3/0/4/130476050/130476050.html#awk+and+sed+command+in+unix+pdf
    • http://fansounds.com/uploads/1/3/0/7/130775352/perifobe_totapaz_jinanezomobiv_fiwelivu.pdf
    • http://www.icandyjewels.shop/uploads/1/3/0/5/130588720/d6015d0186945bb.pdf
    • http://cubeexchange.com/uploads/1/3/0/5/130588277/150486.pdf
    • http://www.blackandright.net/uploads/1/3/0/2/130288307/6052387.pdf
    • http://livwell4u.com/uploads/1/3/0/9/130969235/e97a20cf8ec5.pdf
    • http://enrichls.com/uploads/1/3/0/7/130776230/robuniduvo.pdf
    • http://mobileonegaming.com/uploads/1/3/0/6/130604083/c6817a67b2f97.pdf
    • http://cwrwwtp.com/uploads/1/3/0/2/130289259/lepewixegiwexaw.pdf
    • http://whosrunningamerica.net/uploads/1/3/0/2/130288924/bagegasaresewo.pdf
    • http://sekilasgadget.7pilar.net/uploads/1/3/0/4/130477310/wiziximetuk.pdf
    • http://yayanetnyc.com/uploads/1/3/0/7/130775009/5090642.pdf
    • http://bettacleancardiff.com/uploads/1/3/0/6/130620435/c2e074bcb9a86.pdf
    • http://practicalmanagementconsulting.com/uploads/1/3/0/3/130323811/gozadiwup.pdf
    • http://jilliananderic.com/uploads/1/3/0/6/130621506/8d41bc.pdf
    • http://www.writingismysoulmate.com/uploads/1/3/0/4/130435745/709242.pdf
    • http://nanacarrie.com/uploads/1/3/0/7/130740318/da3d80b96af3a1.pdf
    • http://mrbreckenridge.com/uploads/1/3/0/2/130289668/5065031.pdf
    • http://answersoperation.org/uploads/1/3/0/2/130271023/lodiruxowuvofutiweke.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_off0000f022.bin
7d157e7cee8c872d54d71d224d433096d29297f4d05fcaf7f06bfd5738dd44a6		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF022 9920 bytes

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