Malicious PDF — malware analysis report

Static analysis result for SHA-256 a22c814e1a94964f…

MALICIOUS

PDF

49.6 KB Created: 2020-03-20 14:48:53 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 875105b4fae925649a5b5604c755ec19 SHA-1: 82b0b44109f712386582fcd6a7dae9a280813cef SHA-256: a22c814e1a94964faa755696d3d25ff4150292f7821d90b1c9d9236c7fcb6c92
62 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a large number of embedded external links, a technique often used for SEO spam or to redirect users to malicious sites. The document body text, though partially corrupted, contains keywords like 'christmas stocking pattern free' and references to the wkhtmltopdf tool, suggesting a lure to unrelated content. The primary heuristic firing indicates a 'PDF_SEO_LINK_FARM' with 30 external links, predominantly hosted on domains like normacowie.ca, pointing towards a link-building or redirection scheme.

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://insureapplewatch.com/uploads/1/3/0/5/130550936/130550936.html#mccalls+christmas+stocking+pattern+free
    • http://normacowie.ca/uploads/1/3/0/5/130551324/d5d07.pdf
    • http://bowdoinexcavation.com/uploads/1/3/0/6/130640048/juxabid.pdf
    • http://cvsports.org/uploads/1/3/0/2/130270762/wisuxodewiw_bafewon_lupuvanobipel.pdf
    • http://www.gawooddesign.com/uploads/1/3/0/5/130541597/12319.pdf
    • http://kingleekrepairshop.com/uploads/1/3/0/4/130488446/tekulo-sobaresiraja-vejep.pdf
    • http://visionary-affairs.com/uploads/1/3/0/5/130540928/6486158.pdf
    • http://www.plussizeweddingdressesvt.com/uploads/1/3/0/2/130291784/69e5dce.pdf
    • http://morganisalive.com/uploads/1/3/0/7/130776449/patowegilos-sefejafosuj-damibusanadu-vegoriboni.pdf
    • http://autodiscover.edgecombebrothers.com.au/uploads/1/3/0/6/130621937/zofinomevopegi-xavenexigaje.pdf
    • http://informacionyturismo.net/uploads/1/3/0/6/130639931/wubafekozola.pdf
    • http://foodtogove.com/uploads/1/3/0/6/130639283/9c495.pdf
    • http://sayorale.org/uploads/1/3/0/5/130588506/mazatenezoj_bezegujabalagov.pdf
    • http://frugalmix.com/uploads/1/3/0/6/130621620/365037.pdf
    • http://finishings.ca/uploads/1/3/0/6/130621388/vesixur.pdf
    • http://capricornwelding.com/uploads/1/3/0/5/130545421/3666956.pdf
    • http://bluffcreekfarmsbedandbreakfast.com/uploads/1/3/0/6/130620902/megiwog-kolisisasibe-zaxutuvagu-lidunugivekaka.pdf
    • http://pornabl.com/uploads/1/3/0/6/130603983/2738282.pdf
    • http://vidalytics.net/uploads/1/3/0/6/130639725/zaziwelukimozox.pdf
    • http://sovereignfoodie.com/uploads/1/3/0/5/130545565/sojadanuxinexa.pdf
    • http://newyearnourishment.com/uploads/1/3/0/6/130620451/nifolufef.pdf
    • http://swordstudycollective.ca/uploads/1/3/0/6/130622110/nepidofofi-varapasek-xutajuturul-nurufam.pdf
    • http://fracturedoptics.com/uploads/1/3/0/5/130588827/778c0.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_off00007e97.bin
cf5c4d1122ca4e366b55878fead65054f4e7d3ce4abe128c6779ef79d24c7e29
pdf-font-stream PDF embedded font (sfnt) at offset 0x7E97 9440 bytes
font_01_sfnt_off0000a1e0.bin
ddc6c38a5929b263b215a5b0c7aa8b1a409f146866f06980111f9f21a6232bf4
pdf-font-stream PDF embedded font (sfnt) at offset 0xA1E0 16036 bytes