Malicious PDF — malware analysis report

Static analysis result for SHA-256 4f62235bcaad2d37…

MALICIOUS

PDF

49.4 KB Created: 2020-08-05 06:28:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 4ef89d7e8857db154bca6807e63dcfb8 SHA-1: 17b2511769959e3095d9fa9944b840239d19756b SHA-256: 4f62235bcaad2d37b8681be6a3d779788c8611ae563095b0d8595ed5eb6ab3bd
194 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/pify?keyword=balarama+stories+in+malayalam+pdf+download'. Additionally, it exhibits characteristics of a PDF SEO link farm, embedding numerous external links, many of which are hosted on Shopify. The document body, though heavily obfuscated, contains references to PDF downloads and the malicious URL, suggesting a lure 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.cc/pify?keyword=balarama+stories+in+malayalam+pdf+download In PDF document text
    • http://files.lifeword.nl/uploads/1/3/1/4/131408117/d394ee73a78e.pdfIn PDF document text
    • http://files.pieceokake.org/uploads/1/3/0/9/130969695/48f8b38ba2afa.pdfIn PDF document text
    • http://tekubakiv.worknbusiness.com/uploads/1/3/0/7/130776757/tugefixatiles.pdfIn PDF document text
    • http://files.inahollandaze.com/uploads/1/3/1/0/131070619/1154673.pdfIn PDF document text
    • http://dodedimo.naturally2.co.uk/uploads/1/3/0/7/130739379/kopoxupijuzi.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
    • https://cdn.shopify.com/s/files/1/0434/6223/0181/files/analisis_de_puestos_en_recursos_humanos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4755/9066/files/inuyasha_ending_songs.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0778/6651/files/19407968512.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/0731/7912/files/oxford_phonics_world_1_the_alphabet_workbook.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6209/9109/files/another_irish_drinking_song.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2574/4547/files/fodon.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/rejumaxerufu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7680/5013/files/57282385999.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8543/0945/files/54229501656.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8897/7813/files/57047434528.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4040/6695/files/box-_shadow_css.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6341/8784/files/fogilabolesozojuxuxe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1573/2376/files/20391610486.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006c43.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C43 5432 bytes
SHA-256: efb839b9c01f5084f546ea981f30f1e9c2b93676d4276dadcf733fcd0d35cf7f
font_01_sfnt_off00007eb5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7EB5 5920 bytes
SHA-256: f197bf3ada89e3af1120bbbe58811bf3527285dcb8556d00871b21b217bfd40c
font_02_sfnt_off000093f8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x93F8 10560 bytes
SHA-256: e98d9e92b6ff40c919301d6830e2ce1b4c174e76e751594e4328f5f84f3a7c5e