Malicious PDF — malware analysis report

Static analysis result for SHA-256 8b7e38aa2cb22265…

MALICIOUS

PDF

35.0 KB Created: 2020-05-16 12:37:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9d764a01a83edeee008c42cf1c57e0f8 SHA-1: 70661e43746c552b4a59f32a4b59510c6e87e395 SHA-256: 8b7e38aa2cb22265f08e9b8c1618c5c9bd58ced99a993d03b9839ae83084f6be
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF document contains a large number of external links, many of which are dynamically generated and point to domains commonly used for hosting malicious content. The document body, though partially corrupted, suggests a lure related to account resets or technical support, aiming to trick users into visiting these malicious sites. The ML classifier strongly indicated maliciousness, and the PDF_SEO_LINK_FARM heuristic confirms the suspicious linking behavior.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://lalasunnyjewels.com/uploads/1/3/0/5/130589442/130589442.html#reset+chromecast+ultra+manually
    • http://gibsontina.com/uploads/1/3/0/5/130543369/xudigojafijo-vewidotewam-wizedo-telenifebuvatez.pdf
    • http://anandassi.com/uploads/1/3/0/7/130739080/313742.pdf
    • http://thinkerslodgeoralhistories.com/uploads/1/3/0/5/130590019/5afe4026d0.pdf
    • http://inspirebymikaeli.com/uploads/1/3/0/2/130288762/dufamujexa_wanetud_niximewivoda_mururumowobozaw.pdf
    • http://usapplesupport.co/uploads/1/3/0/3/130323465/7cd3e73067.pdf
    • http://moeperformance.ca/uploads/1/3/0/6/130639865/6eb497bc.pdf
    • http://mindforyou.org/uploads/1/3/0/5/130539697/4956901.pdf
    • http://steamapaloozaccsd.org/uploads/1/3/1/3/131397983/kugaxomodu-xurofi-zoxafomerojiji-serewujomakelaw.pdf
    • http://hettysneedles.com/uploads/1/3/0/5/130551922/kukazopaxa.pdf
    • http://pollardhealthcarefinanceconsulting.org/uploads/1/3/1/3/131381761/xovagakaluwevuf.pdf
    • http://cornerstonelearningprogram.com/uploads/1/3/0/4/130489222/suzibiwaluv_kifirime_xomogofutiked.pdf
    • http://celiaannevents.com/uploads/1/3/1/3/131383721/9844815.pdf
    • http://bandofbrothersforchrist.com/uploads/1/3/0/4/130435751/938177.pdf
    • http://koreaworldtexas.com/uploads/1/3/0/8/130813645/koresuwizifetam.pdf
    • http://agiido.net/uploads/1/3/1/4/131407164/mivunoka_xesirox_gefodolu_nopinozikipu.pdf
    • http://arch-craft.com/uploads/1/3/0/9/130969938/pifobokuvixirag.pdf
    • http://buda.ee/uploads/1/3/0/7/130739853/timiwuxejubito_woniwibiluwuzo.pdf
    • http://sapere-savant.com/uploads/1/3/1/4/131406343/vizoni-dewupuvazoda-zozaguxav.pdf
    • http://neaacupuncture.com/uploads/1/3/0/7/130775106/wedotasedo_wonafudesij_baxorilodiv_duxix.pdf
    • http://forumlogistics.eu/uploads/1/3/0/8/130815437/telob_bebadobetaf.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 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005d94.bin
e8beb940bbf073908ce1c49751981b56a05c0a3ae0c5bf409afa4728b1b4e982		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5D94 10140 bytes

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