Malicious PDF — malware analysis report

Static analysis result for SHA-256 27c3a849791c5eca…

MALICIOUS

PDF

45.7 KB Created: 2020-08-12 13:49:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 49dfea105a395f54e20f5a90f5432081 SHA-1: af220bf77ee8e9673b83aa65196766c80938712b SHA-256: 27c3a849791c5eca059173761b57f9f3d36862c9b310647e0f23ff4ce578dd35
194 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link pointing to ttraff.com, which is used in a lure related to an 'Absa bursary application form'. The document also contains a PDF link farm heuristic, indicating a large number of external links, with the primary one being to a Shopify domain. The embedded URL in the document body further confirms the presence of a link, which is the primary mechanism for delivering the malicious payload.

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=absa+bursary+application+form+pdf In PDF document text
    • http://files.paulaandersononline.com/uploads/1/3/2/8/132814286/5144864.pdfIn PDF document text
    • http://files.sthenrywarrior.org/uploads/1/3/1/4/131453215/dolev_bowolunawenexi_xadunuv_ralafulamuj.pdfIn PDF document text
    • http://files.squareonegoodsco.com/uploads/1/3/2/8/132815154/tasawaz.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/1/0432/3803/1518/files/26141681056.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2739/8807/files/doganepotusetese.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2034/4731/files/mozepusojetefax.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4291/3952/files/terimemozizo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9413/8268/files/robin_hobb_reading_order.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9681/0396/files/kotepeveduxox.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0067/5995/files/50957827033.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/8116/9051/files/second_law_of_thermodynamics_entropy.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4933/7507/files/piper_cherokee_140_checklist.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/1947/4856/files/86230985185.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8564/4447/files/52063311392.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3849/9235/files/32650351513.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3888/4519/files/3d_to_step_converter.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 8

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_off000073e5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x73E5 5532 bytes
SHA-256: b484493db2f04fd8f3a0e399dfd47018526403bb9e1a2b2cc2d3aa5edd38904d
font_01_sfnt_off00008699.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8699 10436 bytes
SHA-256: 2f491894fdd36b3b33b6433b6de9e69390d2a0ef80bc3bf361ec0143bf53bdac

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