Malicious PDF — malware analysis report

Static analysis result for SHA-256 dc9f7dff444dbec7…

MALICIOUS

PDF

40.5 KB Created: 2020-08-18 12:56:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8c553b53be82fa3239b0b1692bda8c2a SHA-1: 4e9848476f72636f4c98b65223487628025efd06 SHA-256: dc9f7dff444dbec7e2054af148c5bab2f7439719b621b94a1a95ff0623105106
120 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with a critical heuristic identifying a link to a known malicious redirector. The document body, though partially corrupted, contains text related to 'Use wifi on airplane mode android' and the malicious URL itself, suggesting a social engineering lure. The presence of a link farm indicates an attempt to distribute malicious content widely. No scripts were extracted from this sample.

Heuristics 3

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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 https://ttraff.ru/pify?keyword=use+wifi+on+airplane+mode+android
    • http://gagabob.maconcountyveterans.org/uploads/1/3/1/4/131410685/d75a307e6b875b.pdf
    • http://files.briannabelmonte.com/uploads/1/3/2/6/132682731/vopagazajis_tewebupujoj_removefoxo_radunuzaberada.pdf
    • http://zivib.bensalmon.org/uploads/1/3/0/8/130814328/zukunez_kozemumo_sipibumeginako_lagojon.pdf
    • http://bilol.selimmawad.com/uploads/1/3/2/7/132740249/kojobid_bemivavi_bidasisina_rukuserevefe.pdf
    • http://files.mathtvcourses.com/uploads/1/3/0/8/130813988/tuveworu.pdf
    • https://cdn.shopify.com/s/files/1/0437/6150/0309/files/dijeluviwerikejejunenelu.pdf
    • https://cdn.shopify.com/s/files/1/0434/4568/2332/files/72954421421.pdf
    • https://cdn.shopify.com/s/files/1/0437/1880/3605/files/83776041342.pdf
    • https://cdn.shopify.com/s/files/1/0431/8186/7176/files/lejagina.pdf
    • https://cdn.shopify.com/s/files/1/0428/6251/0236/files/carrier_psychrometric_chart_download.pdf
    • https://cdn.shopify.com/s/files/1/0433/8260/3927/files/dexowavino.pdf
    • https://cdn.shopify.com/s/files/1/0434/5797/0329/files/nightmare_before_christmas_live_wallpaper.pdf
    • https://cdn.shopify.com/s/files/1/0434/6304/9378/files/31866492157.pdf
    • https://cdn.shopify.com/s/files/1/0439/5322/5883/files/role_de_l_appareil_urinaire.pdf
    • https://cdn.shopify.com/s/files/1/0434/1517/5335/files/florida_class_d_security_license.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_off00005fc1.bin
411d5c570e9a23378db81376d9a466824af303c6f54bce20f35e7a1c9f209033		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5FC1 5268 bytes
font_01_sfnt_off000071a5.bin
267224dcfd3ab5e20d72c0a740d4c6f969980e29c5d3abc7163fd9e5c54d072c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x71A5 10364 bytes

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