Malicious PDF — malware analysis report

Static analysis result for SHA-256 c02a5ba1a356899d…

MALICIOUS

PDF

62.2 KB Created: 2020-08-05 05:44:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 8f29e728444cedbb1a1b62aa6341c5c2 SHA-1: 2ee6d858463b881fb2ea9ea5f5d2b0e4827e33ac SHA-256: c02a5ba1a356899d1953bc798346862d1c01195cbd8d4b7f0d0dc3fe50fcfb93
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://ttraff.com/pify?keyword=aditya+hrudayam+pdf+tamil'. Additionally, it exhibits characteristics of a PDF link farm, embedding numerous external links, many hosted on Shopify. The document body, though heavily obfuscated, contains the same malicious URL, reinforcing the lure. The file was generated using wkhtmltopdf, suggesting it might be part of a larger SEO-based spam campaign.

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=aditya+hrudayam+pdf+tamil In PDF document text
    • http://files.stpeterstpeter.com/uploads/1/3/1/8/131871698/feluraxukefimis_wixipi_taditadot_dozez.pdfIn PDF document text
    • http://files.kafyeblaan.com/uploads/1/3/1/8/131856381/becb5.pdfIn PDF document text
    • http://files.completebydesigncbd.net/uploads/1/3/1/3/131384293/pogufolu-rakifebe-velut-pibutoduwebeper.pdfIn PDF document text
    • http://files.charleighwrenco.shop/uploads/1/3/1/3/131378838/3841231.pdfIn PDF document text
    • http://files.fullyfusedcrafts.co.uk/uploads/1/3/0/7/130775784/mixetositad.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3905/5253/files/78721755079.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6604/1244/files/59447549911.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8098/1403/files/1165412147.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0088/7457/files/janazetapexafopikegobid.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9229/6359/files/vezogebaj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7516/5594/files/fujolopuzekemotokonanuj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1610/1781/files/70055180779.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2556/3801/files/93802050937.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7417/4632/files/pekoxomilik.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9671/1073/files/fijiwelemonuxudivelif.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3390/9665/files/47618860700.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

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008f00.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8F00 4740 bytes
SHA-256: db4e7585775e755217d12b849eff38d9bddbbbd0267c5660f4d384816a16ee91
font_01_sfnt_off00009f14.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9F14 7696 bytes
SHA-256: 315bdf5982bcb76c626f13dd94f3217d1aad3e57bf0bd178849ad7ce7fdc8a13
font_02_sfnt_off0000b525.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB525 12516 bytes
SHA-256: f7a4abe0eb10440e04ec3b2d2dd7fa12a3e66b8bc5f49b149828522c92c51389
font_03_sfnt_off0000dd4e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD4E 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378