Malicious PDF — malware analysis report

Static analysis result for SHA-256 38862a098df2c2f5…

MALICIOUS

PDF

41.0 KB Created: 2020-08-31 02:57:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 53c071fb792ea6fe6b9897e5dc5c60d1 SHA-1: 2ab6d2776f3f88b56db0365853198c31c27ea0f3 SHA-256: 38862a098df2c2f5826b253a86e2fd22cbeab1b4d765e4b2371207329e60c8bd
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 heavily obfuscated, contains the same malicious URL. This suggests the primary intent is to redirect the user to a malicious site, likely for phishing or malware delivery.

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.com/wix?keyword=siklus+akuntansi+perusahaan+dagang+l
    • https://static.usrfiles.com/ugd/a18aa6_d120648a160b4761bef5af0526ed793d.pdf
    • https://static.usrfiles.com/ugd/b5aed9_c2d0cada48ab49f68417ed2f7f6f5e93.pdf
    • https://static.usrfiles.com/ugd/37428b_cf901d51973a4548b2de1110ab3801ba.pdf
    • https://static.usrfiles.com/ugd/5ecadc_b8983508d4c4490a844a3f09e3d70781.pdf
    • https://cdn.shopify.com/s/files/1/0432/1764/9819/files/38062629673.pdf
    • https://cdn.shopify.com/s/files/1/0433/0219/1269/files/chicken_dum_biryani_recipe_video.pdf
    • https://cdn.shopify.com/s/files/1/0432/2800/4507/files/turugesuratirulija.pdf
    • https://cdn.shopify.com/s/files/1/0434/9358/9142/files/doropiraji.pdf
    • https://cdn.shopify.com/s/files/1/0465/0952/3102/files/aidin_salih_gerek_tp_indir.pdf
    • https://cdn.shopify.com/s/files/1/0432/0401/8336/files/mebef.pdf
    • https://cdn.shopify.com/s/files/1/0430/0718/0954/files/revexofilexexalejinume.pdf
    • https://cdn.shopify.com/s/files/1/0432/1614/2497/files/41417801191.pdf
    • https://cdn.shopify.com/s/files/1/0438/2588/9442/files/lopipaz.pdf
    • https://cdn.shopify.com/s/files/1/0432/2571/0750/files/nesofomovisadazu.pdf
    • https://cdn.shopify.com/s/files/1/0432/7853/2761/files/boss_gt_100_tone_studio_software.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_off0000636c.bin
c25631a644d07164f6a284968443e723672798b2f93c90a5d8baad2f35a0273f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x636C 5388 bytes
font_01_sfnt_off000075a9.bin
21bed2bd80e09bc94249c6b627fa8a252051735a2bd30c3cc333c47df4e27121		 pdf-font-stream PDF embedded font (sfnt) at offset 0x75A9 9804 bytes

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