Malicious PDF — malware analysis report

Static analysis result for SHA-256 c3d86604423975ee…

MALICIOUS

PDF

54.4 KB Created: 2020-03-31 22:03:14 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 8924097d9d0dd08c68c70e315bac3869 SHA-1: 36059fbb49baa5e8fcac50cbca38a0b890d356fa SHA-256: c3d86604423975ee37af77ea143ca4b73f1d2d781076393c77cd68f6dec8f1b9
62 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.001 PowerShell

The PDF document contains a large number of external links to other PDF files hosted on various domains. This behavior is indicative of a link farm or a method to distribute malicious content across multiple sites. The document body itself is heavily obfuscated and contains metadata suggesting it was generated by wkhtmltopdf, which can be abused to create such link farms. No scripts were extracted, limiting the ability to determine further payload delivery or execution methods.

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://northamericanimamsfederation.net/uploads/1/3/0/3/130379367/130379367.html#aura+carlos+fuentes+wiki
    • http://envivagroup.com/uploads/1/3/0/7/130739120/051f0a95.pdf
    • http://compassionchurch.com/uploads/1/3/0/5/130590456/gaforadozef_ratiwiwadoje_junanixeronimon_xasatuvejemulus.pdf
    • http://carbonneutraluniversity.com/uploads/1/3/0/7/130775903/f46adb9a3168c9.pdf
    • http://collinhahn.com/uploads/1/3/0/2/130289433/cbb3cc0110f.pdf
    • http://create218.org/uploads/1/3/1/3/131378779/mozixefalaxig.pdf
    • http://morishjems.com/uploads/1/3/0/7/130739811/8d95b6b.pdf
    • http://electricianrichardsontx.net/uploads/1/3/0/6/130604768/mofitobotimagop-kilog-wotebadoxidine.pdf
    • http://bpenergy.me/uploads/1/3/0/2/130288559/1614ce0c291bf.pdf
    • http://emralliance.org/uploads/1/3/0/5/130551656/xukoxuxivubuda_pabufobavar_nigupafav_lupim.pdf
    • http://wicklowpartners.com/uploads/1/3/0/3/130313470/4d9594af7f7.pdf
    • http://debforclaremontcouncil.com/uploads/1/3/0/9/130969515/1364969.pdf
    • http://thebabmarket.com/uploads/1/3/0/9/130969346/cc6f75f6d92f3d.pdf
    • http://tezotech.com/uploads/1/3/1/1/131163732/d27f572f.pdf
    • http://server65164.misscarols.com/uploads/1/3/1/4/131411857/gesonazev.pdf
    • http://tekeningvoorjou.nl/uploads/1/3/0/6/130604612/1582152.pdf
    • http://fearlesjourney.com/uploads/1/3/0/5/130588266/1562396.pdf
    • http://qtbootiestrap.com/uploads/1/3/0/8/130873842/gezef.pdf
    • http://mrsfrasquitadavis.com/uploads/1/3/0/6/130621656/lamefukosal-temujozokoxo-durezisoziv.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00009bd7.bin
85a205ffe56e3140ba6c137eb260267092b683719ff913bb4bd9dbb085274a41		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9BD7 11552 bytes
font_01_sfnt_off0000c145.bin
e91619dfd4c72a85464d95ef1ba4e67df13020651c42071bafbe521a61d9f7fc		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC145 2652 bytes

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