Malicious PDF — malware analysis report

Static analysis result for SHA-256 ca1533c77456541e…

MALICIOUS

PDF

68.9 KB Created: 2020-08-10 20:31:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8132e5ed8eb20f253e8dbed15335e635 SHA-1: af2c1dd458b3189c082b4926c56b571def837d63 SHA-256: ca1533c77456541ea6e2434229523eb1fec469c75654fdd5c54d6aa0d30c3d00
120 Risk Score

Malware Insights

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

The PDF file contains a link farm designed to appear as a "Kerala driving licence learners test book pdf", which redirects to a malicious URL. The primary heuristic indicates a malicious redirector link, and the document body confirms the lure. The embedded URLs suggest a link-farming SEO scam designed to drive traffic to malicious infrastructure.

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/pify?keyword=kerala+driving+licence+learners+test+book+pdf
    • http://files.beebetrained.com/uploads/1/3/0/8/130814351/b45520.pdf
    • http://velodizu.beyondnailartsupply.com/uploads/1/3/1/8/131872225/1256674.pdf
    • http://files.instantcarappraisal.com/uploads/1/3/0/9/130969744/ed16ae8a8f253.pdf
    • http://files.brookeelementary.org/uploads/1/3/1/6/131636834/0a4bd162d4d7a.pdf
    • http://files.canadianastatic.com/uploads/1/3/2/8/132815365/7726029.pdf
    • https://cdn.shopify.com/s/files/1/0437/5802/6904/files/74486704820.pdf
    • https://cdn.shopify.com/s/files/1/0428/3914/6662/files/89234537380.pdf
    • https://cdn.shopify.com/s/files/1/0436/2207/2480/files/dragon_ball_full_episodes.pdf
    • https://cdn.shopify.com/s/files/1/0429/4901/7756/files/dekalixabola.pdf
    • https://cdn.shopify.com/s/files/1/0431/3009/3728/files/vajukofoza.pdf
    • https://cdn.shopify.com/s/files/1/0433/3155/1400/files/capitalization_worksheet_for_grade_1.pdf
    • https://cdn.shopify.com/s/files/1/0434/7206/0573/files/cambridge_certificate_in_advanced_english_2_with_answers.pdf
    • https://cdn.shopify.com/s/files/1/0438/4364/9698/files/hipoplasia_renal_pediatria.pdf
    • https://cdn.shopify.com/s/files/1/0430/5738/1530/files/la_motivation_des_actes_administratifs.pdf
    • https://cdn.shopify.com/s/files/1/0431/7318/3637/files/19449596035.pdf
    • https://cdn.shopify.com/s/files/1/0435/2753/6799/files/xenudunonagi.pdf
    • https://cdn.shopify.com/s/files/1/0431/6620/4066/files/61842363668.pdf
    • https://cdn.shopify.com/s/files/1/0430/7877/9047/files/cbt_work_with_asperger_s_syndrome.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 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000a7df.bin
4aba2bb845853324476be69e5ed1bf4ff35002942389efac2b843cac1129f0e9		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA7DF 2828 bytes
font_01_sfnt_off0000b1da.bin
60491d1f8360978acd96b25907d6e223bf3612bc8bbba133d69fad7ef0bef85a		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB1DA 5344 bytes
font_02_sfnt_off0000c403.bin
3d6ac1d5133ee8d82a1092c13ac4498bd1a90f928a25174a4e868251053eda5b		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC403 4364 bytes
font_03_sfnt_off0000d475.bin
99491abe22b3f94dd3bc65fa03de30129fdba6a4fdf84197320861dc599f028f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD475 10296 bytes
font_04_sfnt_off0000f76b.bin
9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF76B 4324 bytes

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