Malicious PDF — malware analysis report

Static analysis result for SHA-256 6ab5a2a509d9d67a…

MALICIOUS

PDF

42.1 KB Created: 2020-07-12 02:38:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: cbc5cbc04630195bd097895492cf9a15 SHA-1: f1a9caca6955868e0d4aadad1ca568c4b9651c1c SHA-256: 6ab5a2a509d9d67ac030365dccd7d1b2a88feda0afd37a2388d00f96c5797237
194 Risk Score

Malware Insights

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

The PDF document contains numerous links designed to appear as search results, leading to a redirector URL. This suggests a phishing or SEO poisoning attack aimed at driving traffic to malicious sites. The ML classifier strongly indicated maliciousness, and the presence of redirector links confirms a malicious intent to lead 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.ru/wb?keyword=encounters%20with%20jesus%20tim%20keller%20pdf In PDF document text
    • http://files.csoaf.com/uploads/1/3/0/7/130775186/9552357.pdfIn PDF document text
    • http://files.indonesianorphanages.org/uploads/1/3/0/7/130739239/jugik.pdfIn PDF document text
    • http://files.ecovalleyconstruction.com/uploads/1/3/1/6/131606173/3b36f003751add.pdfIn PDF document text
    • http://files.newbeginningswalworth.com/uploads/1/3/0/7/130776841/tunanazopab.pdfIn PDF document text
    • http://files.lairdnorton.org/uploads/1/3/1/6/131606059/baxikisid-sawave-mobubipigozewo.pdfIn PDF document text
    • http://files.newdaytherapies.com/uploads/1/3/2/6/132695836/tazazupojabiwenow.pdfIn PDF document text
    • http://files.namioncampusuno.com/uploads/1/3/0/7/130739883/buteninolemenagup.pdfIn PDF document text
    • http://files.northshropshirelabour.org/uploads/1/3/1/8/131857650/jajolar.pdfIn PDF document text
    • http://files.duanebrownlaw.com/uploads/1/3/1/4/131483253/2887604.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://jevezuvexog.files.wordpress.com/2020/07/37695737397.pdfIn PDF document text
    • https://bofisoj.files.wordpress.com/2020/07/xugesugijozasavebisepix.pdfIn PDF document text
    • https://jadunupugali.files.wordpress.com/2020/07/38896625533.pdfIn PDF document text
    • https://lojategi.files.wordpress.com/2020/07/zevadidofuboba.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/98690712505.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/vukabisozudetilo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/rewosegukedisupagur.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/rinubigelezegir.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4742/9031/files/20116781325.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/86593634255.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4447/0933/files/14458921873.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6596/6754/files/tamujiberapomutafajijegi.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006743.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6743 5256 bytes
SHA-256: dedb1ab5e6bf11a6b1ab0e3edac662e253d297898b5498b06b57f70e5be1fb7b
font_01_sfnt_off00007908.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7908 9988 bytes
SHA-256: e3836d2e2dc3207aa9356b30c9737c194d428df21c856ecc03b36df2bcdbd366