Malicious PDF — malware analysis report

Static analysis result for SHA-256 412095c47c3463ab…

MALICIOUS

PDF

46.5 KB Created: 2020-05-15 04:17:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a5dfe775855b8c75b2e6be50684e6ed8 SHA-1: 807a16d8c3fc0b2ce3efdecb7fd4ada2bd2581ea SHA-256: 412095c47c3463abaebb037c7cac6c03d5aee46eaf927aa2e97da603a969e167
70 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, many of which are numerically slugged and hosted on various domains, suggesting a link farm or SEO abuse tactic. The document body text, though corrupted, contains keywords related to 'billing management system project report', indicating a lure to entice users to click on the embedded malicious URLs. The heuristic 'PDF_SEO_LINK_FARM' strongly suggests this is not a legitimate document but rather a vehicle for distributing malicious links.

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://losgatosswingband.com/uploads/1/3/0/2/130288448/130288448.html#billing+management+system+project+report
    • http://atom-magic.com/uploads/1/3/0/8/130814060/jutopet_lexipijokodote_fibiporefewe.pdf
    • http://stayawareart.com/uploads/1/3/0/7/130739682/zivolumavozage.pdf
    • http://nextheartbeat.com/uploads/1/3/1/4/131407010/wuzegap_rufukazonemagap.pdf
    • http://wendyfwilliams.net/uploads/1/3/0/3/130313577/zosokeguwularir_sopivivab.pdf
    • http://howie.life/uploads/1/3/0/5/130539034/bitome_vojejavotiseg.pdf
    • http://thecharmerwpb.com/uploads/1/3/1/4/131406321/komujenomupufoz_xetujito_parenaz_litavobabojaxeg.pdf
    • http://vonshartzer.com/uploads/1/3/1/3/131398373/5b787b4f593cd8.pdf
    • http://queenofwandstarot.net/uploads/1/3/1/6/131606121/2625558.pdf
    • http://borderlinesproject.com/uploads/1/3/0/5/130546036/wexujo-zuravix.pdf
    • http://dropoak.com/uploads/1/3/0/4/130483842/kogomikefu_jimunejar.pdf
    • http://thesoundofkitty.com/uploads/1/3/0/4/130476188/semuwopub.pdf
    • http://npetersonphoto.com/uploads/1/3/0/4/130488273/pamavorugin_segofusobi_kukitozekuwilax.pdf
    • http://bayareaspark.com/uploads/1/3/0/4/130488197/4405217.pdf
    • http://stullinvest.com/uploads/1/3/0/6/130639386/a6bc47.pdf
    • http://marcuslaster.com/uploads/1/3/0/9/130969249/bokube.pdf
    • http://annarborsolarpanels.com/uploads/1/3/0/6/130605193/damutova-jefapilir-lodafudow-dawakuvorisimid.pdf
    • http://reviwork.com/uploads/1/3/0/5/130589230/85f4b578b2a9a66.pdf
    • http://retrospectives-vintage.com/uploads/1/3/0/4/130435794/bomanimisalenim_tokivimorabi.pdf
    • http://greenjuicegroupclient.com/uploads/1/3/1/6/131636839/miguvipiwelaw.pdf
    • http://thenodramamamas.com/uploads/1/3/0/2/130287269/1840973.pdf
    • http://annenissen.com/uploads/1/3/0/6/130605217/gumewunale.pdf
    • http://khmediation.com/uploads/1/3/0/5/130589217/mijivifunetizo.pdf
    • http://beproudvotecloud.com/uploads/1/3/0/2/130288522/7035156.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_off00007414.bin
5c598332b9cc8201abea06ec722f938d9d561bc24a9b2e7f8529bcb8e86a7dea		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7414 10372 bytes
font_01_sfnt_off0000980a.bin
3d72930feeb0bc85a428506d97b17090741e71edc66cc4b7f164aebee93a2863		 pdf-font-stream PDF embedded font (sfnt) at offset 0x980A 6328 bytes

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