Malicious PDF — malware analysis report

Static analysis result for SHA-256 73c794d2b59de9d7…

MALICIOUS

PDF

55.9 KB Created: 2020-08-23 16:56:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: db201a7226da4c261a5ebaec8892406e SHA-1: 6291a4b9c3a591c4399fb907834e298dff356c43 SHA-256: 73c794d2b59de9d794b05daa13ce4f052a7b70b30d924257cc4ed857887b533b
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded links, many of which point to redirectors and SEO link farms, indicating a phishing or scam attempt. The ML classifier strongly flagged this PDF as malicious. The document body, though obfuscated, contains a URL that appears to be part of the lure, suggesting the intent is to redirect users to potentially harmful 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.com/pify?keyword=sample+financial+analyst+interview+questions+and+answers In PDF document text
    • http://mifodozar.horseandriderconnection.org/uploads/1/3/1/8/131857054/efa90.pdfIn PDF document text
    • http://files.livinggodsmission.com/uploads/1/3/0/8/130874413/femobupowufebekoluta.pdfIn PDF document text
    • http://files.bombayinternationalusa.com/uploads/1/3/1/3/131380600/8600107.pdfIn PDF document text
    • http://files.aftereuphoria.net/uploads/1/3/2/6/132681671/7667213.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/1/0431/9513/8208/files/forming_a_concrete_shower_base.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0451/5204/3162/files/bhagavad_gita_as_it_is_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0465/9429/3925/files/free_assured_shorthold_tenancy_agreement_template_uk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/texirid.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6404/1373/files/38357864584.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6735/9900/files/lavotulixotetezijedatokif.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9105/1161/files/wassce_core_mathematics_syllabus.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7424/1183/files/lokusigunusidoza.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8643/8807/files/kijewozimajepiwebupovol.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_off00009bfd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9BFD 5784 bytes
SHA-256: d408db9a9087019326e61483c1b4c0efac7fd2b53ac3f72674ae937d41b38f0a
font_01_sfnt_off0000afab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAFAB 10272 bytes
SHA-256: b95e59a14e136f2baf0085de5c5f9cbd448e0fe3bcb38444a1affe89ba529063

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