Malicious PDF — malware analysis report

Static analysis result for SHA-256 db977b016bb164d8…

MALICIOUS

PDF

45.9 KB Created: 2020-03-17 12:45:43 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 90a134accc18d793c748f6abe1b595cd SHA-1: 1681c4b758c9cb781ca665c2d6b194bddbad6ba6 SHA-256: db977b016bb164d874ebdeb570acc7716196fe87752984ef872bcc9c16ac8f20
62 Risk Score

Malware Insights

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

The PDF document contains a large number of external links, a technique often used for SEO poisoning or to redirect users to malicious sites. The document body text, while appearing to be educational material, is likely a lure. The primary heuristic indicates a PDF URI pointing to a potentially malicious HTML file, and another heuristic flags a 'link farm' of external PDF links, suggesting a coordinated effort to distribute malicious content. No scripts were extracted from this sample.

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://gotvapestache.com/uploads/1/3/0/7/130776861/130776861.html#ejercicios+verbos+en+presente+de+subjuntivo
    • http://lionheartinvestments.org/uploads/1/3/0/5/130543198/c3741.pdf
    • http://test.ig-eng.org/uploads/1/3/0/5/130539449/2564235.pdf
    • http://www.rrrofsouthla.com/uploads/1/3/0/4/130483276/8918330.pdf
    • http://www.southlaketahoetowing.net/uploads/1/3/0/2/130288397/e070ae996941d.pdf
    • http://thenetdefenders.com/uploads/1/3/0/7/130739831/bonoxe-venom.pdf
    • http://beach-music.com/uploads/1/3/0/6/130604758/vesisineti.pdf
    • http://veenalifestyle.com.au/uploads/1/3/0/7/130776533/6d3c5fd9020e.pdf
    • http://mx.downtowndenisonfarmersmarket.com/uploads/1/3/0/5/130588188/lipimi-pedusat-nofan.pdf
    • http://evanpigg.com/uploads/1/3/1/1/131164557/3450d66b451d.pdf
    • http://www.body-balancing.com/uploads/1/3/0/2/130271002/f392c70e3dd2.pdf
    • http://nateandamy.com/uploads/1/3/0/4/130476616/badepadar-timufubaj-viwupudatukozon-liravigufivo.pdf
    • http://mobilehairsylists.com/uploads/1/3/0/4/130476351/zosixixazewubi-jepemi-voxipeguxop.pdf
    • http://www.petersonskattumrealtygroup.com/uploads/1/3/0/9/130969600/nugipawadajik.pdf
    • http://www.designerbearsandanimals.com/uploads/1/3/0/6/130604527/2683679.pdf
    • http://www.eartrainingacademy.com/uploads/1/3/0/6/130604482/577692d06f406b.pdf
    • http://newwaveproperties.net/uploads/1/3/0/6/130604368/534a27.pdf
    • http://davidsbridalma.com/uploads/1/3/0/6/130604723/jekaf.pdf
    • http://firsteditionconsulting.com/uploads/1/3/0/5/130590361/sapigulazisorododim.pdf
    • http://www.parsonagesaddles.com/uploads/1/3/0/3/130324288/6790996.pdf
    • http://infowaveconsulting.com/uploads/1/3/0/6/130621195/d2997da14834c3.pdf
    • http://northwestclubracer.com/uploads/1/3/0/6/130604951/xikofewukib-jogadi.pdf
    • http://mail.jrasales.com/uploads/1/3/0/7/130739614/vebamujenoso_wanevesogarotal_rupeminonapen.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_off00007dd8.bin
f7446e83eedf0b4b4f9dbb7ea0ce1fcc4038ffec331e5776623891a760ba8a44
pdf-font-stream PDF embedded font (sfnt) at offset 0x7DD8 8992 bytes
font_01_sfnt_off00009ea9.bin
e2f1373bf3d70a40ff4276a486f0a1d2d32154e4f45ad1243a44c3d3b7d91cea
pdf-font-stream PDF embedded font (sfnt) at offset 0x9EA9 2652 bytes