Malicious PDF — malware analysis report

Static analysis result for SHA-256 f9a890404da8485a…

MALICIOUS

PDF

48.6 KB Created: 2020-08-05 15:36:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 66d484e88302df6b062fc0c0508ce3c1 SHA-1: b33aecdaf25c05c6f41e2afee6064948936849f9 SHA-256: f9a890404da8485a7ec5aebca2a58ded1f741f1604ec66c01886a8b53f730516
128 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with one link pointing to a known malicious redirector. The document body also contains a call-to-action phrase, suggesting a lure to trick the user into clicking the malicious link. The primary malicious IOC is the redirector URL.

Heuristics 4

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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.cc/pify?keyword=amar+ujala+newspaper+pdf+file+download
    • http://files.thederekday.com/uploads/1/3/2/6/132695546/gokuxusovoz.pdf
    • http://files.oliveandaloe.com/uploads/1/3/1/4/131437878/kabagup_kepubagepekom.pdf
    • http://files.bullmastiffregisterofmerit.com/uploads/1/3/2/6/132696030/357465b.pdf
    • https://cdn.shopify.com/s/files/1/0430/2913/5521/files/list_of_adjectives_with_urdu_meaning.pdf
    • https://cdn.shopify.com/s/files/1/0430/5174/5442/files/zajizene.pdf
    • https://cdn.shopify.com/s/files/1/0435/3074/8055/files/wuvotapaduker.pdf
    • https://cdn.shopify.com/s/files/1/0433/7221/6483/files/pemomixe.pdf
    • https://cdn.shopify.com/s/files/1/0428/7404/4579/files/vevixemab.pdf
    • https://cdn.shopify.com/s/files/1/0434/5063/0296/files/goviduzejigasiwaz.pdf
    • https://cdn.shopify.com/s/files/1/0430/6262/4417/files/fopiwonogujakofutego.pdf
    • https://cdn.shopify.com/s/files/1/0427/5198/3772/files/59192882979.pdf
    • https://cdn.shopify.com/s/files/1/0432/3826/0899/files/buminopaz.pdf
    • https://cdn.shopify.com/s/files/1/0430/3103/6053/files/63911849188.pdf
    • https://cdn.shopify.com/s/files/1/0431/2625/9876/files/vajamaxawefanubuvoz.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005d9f.bin
fa67d49cb1cfea798b8b000dca8d218acf856251b673e3f4fd94442588e277da		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5D9F 5148 bytes
font_01_sfnt_off00006f0b.bin
4b5adb86047ec08cdef324b31e23c39ce8b63d271091420d90c348776a7e586e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6F0B 11720 bytes
font_02_sfnt_off00009547.bin
cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9547 4324 bytes
font_03_sfnt_off0000a348.bin
6302bcf348e2f8829e76dda91bebe1fa7f7e16041c5601a403363cba750081da		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA348 4592 bytes

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