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) First seen: 2026-05-08
MD5: 8132e5ed8eb20f253e8dbed15335e635 SHA-1: af2c1dd458b3189c082b4926c56b571def837d63 SHA-256: ca1533c77456541ea6e2434229523eb1fec469c75654fdd5c54d6aa0d30c3d00
194 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.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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 In PDF document text
    • http://files.beebetrained.com/uploads/1/3/0/8/130814351/b45520.pdfIn PDF document text
    • http://velodizu.beyondnailartsupply.com/uploads/1/3/1/8/131872225/1256674.pdfIn PDF document text
    • http://files.instantcarappraisal.com/uploads/1/3/0/9/130969744/ed16ae8a8f253.pdfIn PDF document text
    • http://files.brookeelementary.org/uploads/1/3/1/6/131636834/0a4bd162d4d7a.pdfIn PDF document text
    • http://files.canadianastatic.com/uploads/1/3/2/8/132815365/7726029.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://smc.org.in)MeeraRegularMeera2016SMC7.0.0+20171102HussainIn PDF document text
    • http://smc.org.inhttp://smc.org.inIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5802/6904/files/74486704820.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3914/6662/files/89234537380.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2207/2480/files/dragon_ball_full_episodes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4901/7756/files/dekalixabola.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3009/3728/files/vajukofoza.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3155/1400/files/capitalization_worksheet_for_grade_1.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7206/0573/files/cambridge_certificate_in_advanced_english_2_with_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4364/9698/files/hipoplasia_renal_pediatria.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5738/1530/files/la_motivation_des_actes_administratifs.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7318/3637/files/19449596035.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2753/6799/files/xenudunonagi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6620/4066/files/61842363668.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7877/9047/files/cbt_work_with_asperger_s_syndrome.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text
    • https://gitlab.com/smc/meera/blob/master/COPYINGIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000a7df.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA7DF 2828 bytes
SHA-256: 4aba2bb845853324476be69e5ed1bf4ff35002942389efac2b843cac1129f0e9
font_01_sfnt_off0000b1da.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB1DA 5344 bytes
SHA-256: 60491d1f8360978acd96b25907d6e223bf3612bc8bbba133d69fad7ef0bef85a
font_02_sfnt_off0000c403.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC403 4364 bytes
SHA-256: 3d6ac1d5133ee8d82a1092c13ac4498bd1a90f928a25174a4e868251053eda5b
font_03_sfnt_off0000d475.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD475 10296 bytes
SHA-256: 99491abe22b3f94dd3bc65fa03de30129fdba6a4fdf84197320861dc599f028f
font_04_sfnt_off0000f76b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF76B 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2

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