Malicious PDF — malware analysis report

Static analysis result for SHA-256 5c4dd98957046e6b…

MALICIOUS

PDF

41.9 KB Created: 2020-08-18 18:48:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: ebb4a446437f7ada680d4367687a2e03 SHA-1: f8653818b146c6bdebf2d4a9c617de2594c1113e SHA-256: 5c4dd98957046e6b9b8499782cf8238668cd0eef74feba11089e1c18ec9d2a22
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous links, many of which point to a redirector service (ttraff.ru) that is flagged as malicious. The document body and embedded link structure suggest a lure to download further content, likely malicious. The presence of multiple PDF links, including those on Shopify domains, indicates a link farm designed to distribute malicious content.

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.ru/pify?keyword=anand+sahib+path+in+punjabi+pdf In PDF document text
    • http://files.herbheathmusic.com/uploads/1/3/1/3/131380759/6917697.pdfIn PDF document text
    • http://files.welleyofficial.com/uploads/1/3/1/1/131164431/bakukewejatas_fekugizajenudom_puligisibizume.pdfIn PDF document text
    • http://files.el-mastaba.org/uploads/1/3/1/4/131408899/749df461e.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5460/4198/files/xibuz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/6021/4425/files/veguvoturabafolonove.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/8872/2597/files/tumijuwovisor.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/23651487672.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9501/4042/files/simple_english_grammar_for_beginners.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2915/0368/files/wujibibamogelugelezadix.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8282/5382/files/parekorugamoxuvawun.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/1083/9960/files/adobe_reader_free_download_for_windows_xp_32_bit.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6566/1853/files/diffusion_and_effusion_of_gases.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9923/4203/files/77956452892.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0454/8034/5750/files/56666352010.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

Related samples 5

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

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000060c4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60C4 5208 bytes
SHA-256: e7e15fdb51d20a9245610f3d5225e73419a6c6bf61263204738ad30bb75a4720
font_01_sfnt_off00007276.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7276 12844 bytes
SHA-256: c99c9caa5aa65971ea60eda4c9ee5c0c357ed07ec3887782632b78e1920689f2

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