Malicious PDF — malware analysis report

Static analysis result for SHA-256 73fa11634fcad82f…

MALICIOUS

PDF

40.5 KB Created: 2020-08-20 06:27:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 25eaa0e4d2edf9bc1102b07f55deb593 SHA-1: b53558b151fd2b6776fdda7afc9a25d36d7fe1a2 SHA-256: 73fa11634fcad82fb680a1d4c03895a4f09be7c58425aa4f0705bcba96c0c1a7
202 Risk Score

Malware Insights

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

The PDF contains a deceptive link presented as an annual report, which redirects to a malicious URL. This is further supported by heuristics indicating the PDF links to known malicious redirector infrastructure and is part of a link farm. The ML classifier also strongly indicated maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=bayer+ag+annual+report+2012 In PDF document text
    • http://rijalira.epiphanyexcelcenter.org/uploads/1/3/1/8/131872295/174eabfda5597aa.pdfIn PDF document text
    • http://files.mesahhealingandreadings.com/uploads/1/3/0/9/130969982/98f44929b.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/1/0435/4582/1333/files/21882457214.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2756/9576/files/86715863282.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0253/5840/files/5629730571.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1103/0690/files/14521764683.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8091/6893/files/baixar_livro_as_catacumbas_de_roma_em.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7719/7221/files/16589805575.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5341/5576/files/562936969.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5095/0041/files/83429209498.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8298/1281/files/raladib.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/1323/2024/files/59243689195.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 2

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_off0000615e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x615E 5284 bytes
SHA-256: f82e2899772f2975e6f3658ede678c876aac1ead99429ff41fddd5efcc310362
font_01_sfnt_off00007373.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7373 9920 bytes
SHA-256: 8678a355074701b55b4e901f93ba91c2ebdc1bdf7d08433932d41f7123493c0e

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