Malicious PDF — malware analysis report

Static analysis result for SHA-256 57fd13c2206dbee8…

MALICIOUS

PDF

50.9 KB Created: 2020-08-06 16:06:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 5a3051943a13b86d3b62265c8ee8b0ec SHA-1: 4d1ac9fadccd480f3a338c3eb6a2b994c3afc928 SHA-256: 57fd13c2206dbee81f58d52840888f9d1b56e8e2ebe50fcb9cf8c97b987f42dd
194 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with a critical heuristic firing indicating a malicious redirector. The document body, though partially corrupted, contains text related to 'python programming pdf' and a URL that leads to a redirector. This redirector is likely used to funnel victims to malicious sites, potentially for phishing or malware distribution.

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=best+book+to+learn+python+programming+pdf In PDF document text
    • http://files.betterwiththebible.com/uploads/1/3/0/7/130776542/venezi.pdfIn PDF document text
    • http://files.skipstonepublishing.com/uploads/1/3/1/3/131380032/5723668.pdfIn PDF document text
    • http://files.crcs.bc.ca/uploads/1/3/0/7/130740612/0c7e7583.pdfIn PDF document text
    • http://files.jgsinvestments.com/uploads/1/3/1/3/131380213/wuvowusopora.pdfIn PDF document text
    • http://files.libbyfarrelly.com/uploads/1/3/1/3/131398091/vabijoratibis.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8443/9971/files/61866286134.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7679/7081/files/vimorinukise.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/9648/7576/files/nigerian_banking_industry_overview_2020_pdf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0755/7275/files/33980330848.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1415/2607/files/62022326211.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5661/8917/files/aerobus_bologna_orari.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3134/6856/files/9483522855.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4303/6053/files/jutagikugig.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8070/4405/files/fupuv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7146/3831/files/30229619832.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9658/1020/files/bibenubim.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007b5b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7B5B 5596 bytes
SHA-256: 74ead50d6cb426eafdf9f93d0fac043c58daf5c6f2eb53106a44b7bcfd6343d8
font_01_sfnt_off00008e37.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8E37 10060 bytes
SHA-256: f878389a47a2e8fdf088ecb7ac283af8858e51c59908045725fd8dbfbc4f34d3
font_02_sfnt_off0000b090.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB090 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378

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