Malicious PDF — malware analysis report

Static analysis result for SHA-256 cadb3e2a187b995b…

MALICIOUS

PDF

41.2 KB Created: 2020-03-24 11:05:12 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: f3a7f4e540a06054a2c7005cbe3ecc8d SHA-1: 1dbd4c89d371f7adce7a803bf0b738649d1acc33 SHA-256: cadb3e2a187b995bc7c8f5f455d44c15f85f81054a15095e610a5b5b4527ede5
70 Risk Score

Malware Insights

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

The PDF document contains numerous embedded links, many of which point to other PDF files hosted on various domains. This behavior is indicative of a link farm or a phishing lure, likely intended to direct users to malicious content or further phishing pages. The presence of invoice-related language further supports the phishing pretext. No scripts were extracted from this sample.

Heuristics 4

  • 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.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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://deceptivelysimple.com/uploads/1/3/0/8/130874386/130874386.html#aflac+employee+benefits+specialist+salary
    • http://rodconstruction.org/uploads/1/3/0/6/130604798/pedox-kuxuguxawelexij-gusisitojute-ramavabekoda.pdf
    • http://theworkingconnectionllc.net/uploads/1/3/0/5/130544413/turagelavofajo_guxawogifuno_rewagaxenulasip.pdf
    • http://dabispop.com/uploads/1/3/0/6/130639591/mefoturadezozeje.pdf
    • http://oftheairphotography.com/uploads/1/3/0/8/130813420/futuk.pdf
    • http://www.15codeblocks.com/uploads/1/3/0/4/130436018/dopepazozunorugev.pdf
    • http://webdisk.floweroflovesf.com/uploads/1/3/0/2/130288341/1059764.pdf
    • http://largescaleinvolutions.com/uploads/1/3/0/6/130604361/6710235.pdf
    • http://susykoons.com/uploads/1/3/0/7/130738881/3671959.pdf
    • http://sunset-villa-corfu.com/uploads/1/3/0/2/130273814/8564d7e7f.pdf
    • http://whitebalancephoto.com/uploads/1/3/0/7/130740025/tiwev-rexarux.pdf
    • http://ns1.reisebuero-flemming.de/uploads/1/3/0/2/130272613/vuxogixib.pdf
    • http://www.mansonscloset.com/uploads/1/3/0/2/130287946/b23a31.pdf
    • http://milecreekfarmsixmilesc.com/uploads/1/3/0/7/130739463/7521287.pdf
    • http://www.wtecli.com/uploads/1/3/0/5/130589449/vodaporowuboj_zivemom_ginev_nejixavixixi.pdf
    • http://1-to-6.com/uploads/1/3/0/6/130605072/326d4e9194372.pdf
    • http://www.blackwatchagribusiness.net/uploads/1/3/0/4/130488395/9442821.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_off00006768.bin
55d29e6adb29d4cd29dacc285e15194dc87d0d72abebe132f9ad0e34f7115b61		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6768 8544 bytes
font_01_sfnt_off0000882c.bin
885781ec91db75dc8c4a6a3d3dac0324bdfdb8f2239dab70466c62035ae072da		 pdf-font-stream PDF embedded font (sfnt) at offset 0x882C 4144 bytes

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