Malicious PDF — malware analysis report

Static analysis result for SHA-256 c7cdaa443a6abf93…

MALICIOUS

PDF

39.7 KB Created: 2020-03-16 14:59:02 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: bbd263e60ad330f324c2a157de0e4c5b SHA-1: 66f136d569d0be601526f98573ee6e6fdc2a7998 SHA-256: c7cdaa443a6abf9324c55b48e7f1162fdc7a7e86aef895c36330c91525a31c64
92 Risk Score

Malware Insights

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

The PDF contains a large number of external links, a technique commonly used for SEO manipulation or to distribute further malicious content. The ML classifier strongly indicated maliciousness. No scripts were extracted, but the structure and numerous URLs suggest a delivery or redirection mechanism.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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://huangguanguojiyulehuisuo.br3h.com/uploads/1/3/0/4/130483489/130483489.html#evenflo+car+seat+belt+diagram
    • http://arcc06quebecmetropolitain.com/uploads/1/3/0/4/130435872/gufajonojuxepe.pdf
    • http://mayetpinspections.com/uploads/1/3/0/5/130551310/vapikojezitelal.pdf
    • http://heartlessonline.com/uploads/1/3/0/8/130814718/rajogujidapem-fowazijiwuratu-gowijasono-xozumajuf.pdf
    • http://craftchampion.com/uploads/1/3/0/3/130323184/dunezugafu-puzofego.pdf
    • http://simplyberger.com/uploads/1/3/0/4/130476581/988390c.pdf
    • http://gvjhmusic.com/uploads/1/3/0/6/130640175/2f0afc7416411.pdf
    • http://www.ladlesofhope.com/uploads/1/3/0/6/130639877/lepagivegunoxixora.pdf
    • http://wtneonline.com/uploads/1/3/0/7/130739619/zorabamomob.pdf
    • http://cellomusicdownloads.com/uploads/1/3/0/9/130969552/jigezod.pdf
    • http://agcmart.com/uploads/1/3/0/2/130289355/nifowusilunanasa.pdf
    • http://xvjpf.com/uploads/1/3/0/7/130775154/8842744.pdf
    • http://laent.org/uploads/1/3/0/2/130289755/tasikitut.pdf
    • http://livingthewellness.com/uploads/1/3/0/5/130539936/646656.pdf
    • http://dynamiccreditcoaching.com/uploads/1/3/0/4/130483318/8d6c9d5a1a70e7.pdf
    • http://brooklynklaassen.com/uploads/1/3/0/6/130605069/nubofinenininuku.pdf
    • http://kaunited.org/uploads/1/3/0/3/130313458/gelusarezapuwub.pdf
    • http://www.funnymarketonline.com/uploads/1/3/1/1/131164238/9159807.pdf
    • http://weintegration.com/uploads/1/3/0/6/130605476/6dea4e8d0.pdf
    • http://theyearofradicalchange.com/uploads/1/3/1/0/131070866/jutan_serofi_keragesirob_lakusoli.pdf
    • http://reincarnist.com/uploads/1/3/0/5/130542894/gilolutodijekedupa.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_off00006163.bin
195250a8a7fc24a688dc29caa79a029960df1ce17443f25e1e55d70a2ce2e179		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6163 6280 bytes
font_01_sfnt_off00007aa8.bin
779aa567746046747dac965df7fdfb06ff632674a0a99ce247a327bf89f0fa63		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7AA8 16036 bytes

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