Malicious PDF — malware analysis report

Static analysis result for SHA-256 3a203cc2db6d6d0d…

MALICIOUS

PDF

48.2 KB Created: 2020-03-20 11:04:52 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 28f3f8236fd74de4fc355c66a94b0509 SHA-1: f09fe21483c8b6160d080389cbd3c02165e6c909 SHA-256: 3a203cc2db6d6d0df939e3a0dc04834c68f60549d06bf1376957848a7ee0e76b
96 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many of which are dynamically generated SEO-style links pointing to PDF files. The document body mentions "Harry Potter World Hollywood Tickets", suggesting a lure to attract users to click on the embedded malicious links. The ML classifier strongly indicated maliciousness, and the PDF_SEO_LINK_FARM heuristic confirms the presence of a link farm designed to redirect users. The primary IOC is the first external URI found, which also contains the lure text.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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://bshppopup.com/uploads/1/3/0/2/130270967/130270967.html#harry+potter+world+hollywood+tickets
    • http://www.sherfco.com/uploads/1/3/0/9/130969195/buvumusugezobaso.pdf
    • http://evascolaroentertainment.com/uploads/1/3/0/3/130323384/7215889.pdf
    • http://mogili.net/uploads/1/3/0/6/130604973/sowumarokatodejurov.pdf
    • http://www.roswellhomestaging.com/uploads/1/3/0/5/130590177/nafopuzix.pdf
    • http://poppyandrose.co.uk/uploads/1/3/0/6/130621022/momeju.pdf
    • http://www.thsraidersrally.com/uploads/1/3/0/9/130969776/duzezur.pdf
    • http://herbwallace.com/uploads/1/3/1/0/131070381/1690061.pdf
    • http://polarlondon.com/uploads/1/3/0/7/130738949/kexusifumowi-medokiba-dunudoseb.pdf
    • http://libertypa2016.com/uploads/1/3/0/7/130738892/veramoxob-pisowanez.pdf
    • http://allprocustompoolandsupplies.com/uploads/1/3/0/3/130379447/wafemimumifemavejalo.pdf
    • http://zuqiugaidancdenglu1389c.f18.ebkf.org/uploads/1/3/0/7/130738596/sugumanopufumi_desafeturekiz_xumisino.pdf
    • http://hostmaster.macleoddrivingschool.co.uk/uploads/1/3/0/5/130589293/dexikolejajoder.pdf
    • http://better-building.com/uploads/1/3/0/6/130620755/411bbbad.pdf
    • http://dorchesteram.com/uploads/1/3/0/2/130289585/josasejatakepef.pdf
    • http://universal.clientdemo.co.nz/uploads/1/3/0/7/130775249/zipegomit-rotabanosajupib-dunujosi-vefunug.pdf
    • http://jameshamiltonroofingandbuilding.com/uploads/1/3/0/5/130542859/2523772.pdf
    • http://padebtassociates.com/uploads/1/3/0/7/130738578/54837b.pdf
    • http://www.premiumpunters.com.au/uploads/1/3/0/3/130379347/dalamitesetisakiwilu.pdf
    • http://sallymeyer.com/uploads/1/3/0/7/130775009/zejegozip.pdf
    • http://www.elysseceleste.com/uploads/1/3/0/2/130270901/2d7a01.pdf
    • http://artsbasedtherapy.org/uploads/1/3/0/4/130435748/kizaku.pdf
    • http://kpinner.com/uploads/1/3/0/3/130323602/tixuvujuxadobog.pdf
    • http://carmelomilazzo.com/uploads/1/3/0/7/130740222/neruvetonuzetu.pdf
    • http://carmelomilazzo.com/uploads/1/3/0/
    • 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 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008f66.bin
d51b46e5c6163a245ed8aad6c378ef2055e25d9ed1eeaa4983e8ee9d5db2e9d9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8F66 8836 bytes

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