Malicious PDF — malware analysis report

Static analysis result for SHA-256 b39e02eafb27c31a…

MALICIOUS

PDF

34.1 KB Created: 2020-08-20 04:32:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 7d55eb9f1d2166238bc691f02f1b3f3f SHA-1: 441a694f3f7d0801e6fb516c4f632c84b16f9251 SHA-256: b39e02eafb27c31af999e2d857a732ca6fc8896679204d24b803352eec32063b
194 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to external resources. One critical heuristic firing indicates that the document links to known malicious redirector infrastructure via the URL https://ttraff.cc/pify?keyword=calculus+b+v+ramana+pdf. The document body itself contains garbled text but includes the same malicious URL and numerous other URLs hosted on cdn.shopify.com and other domains, suggesting a link farm or SEO poisoning attempt 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.cc/pify?keyword=calculus+b+v+ramana+pdf In PDF document text
    • http://kusoza.nileinstitute.org/uploads/1/3/0/7/130775997/gobekevalu_zibomiba_pigib.pdfIn PDF document text
    • http://wunegiwa.glensheppard.com/uploads/1/3/0/8/130814297/387776.pdfIn PDF document text
    • http://files.maryannscandles.shop/uploads/1/3/1/3/131398333/5795271.pdfIn PDF document text
    • http://xatuka.maidencovechildrenscenter.com/uploads/1/3/1/6/131606490/jotibuwebosokupuzeke.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/1/0433/2440/7961/files/41528985888.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/5037/5070/files/batukafiwopojoke.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7215/1959/files/anticancer_drugs_classification.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/2907/5880/files/winabisiralunimusojilunib.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9446/5942/files/nurse_uniform_store_near_me.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4173/4301/files/99969401823.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7751/0055/files/aadhar_card_form_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0445/3256/4132/files/contoh_amdal_industri_makanan.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6955/4329/files/jakavevekit.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1474/8322/files/bratstvo_crnog_bodea_17.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 1

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_off000047d6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x47D6 5408 bytes
SHA-256: 827d5f37791985d3e932707aef2cc809455220644cdc5711f4acb2831152a9f1
font_01_sfnt_off00005a18.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5A18 9920 bytes
SHA-256: 6896156599dc961884cf63946b61662a8e1dff62803436ecc5821ef7884ab4ae

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