Malicious PDF — malware analysis report

Static analysis result for SHA-256 0a27acef55c5dcd2…

MALICIOUS

PDF

51.2 KB Created: 2020-08-22 09:16:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 94866ad49169c715e269e773b97d4a8f SHA-1: ad633a3621407ea657a8d3900beb14bd0f1f3535 SHA-256: 0a27acef55c5dcd2ddbfffedd4fe26f151be2c8c85cb215d419d6c14451ec6f4
194 Risk Score

Malware Insights

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

This PDF file contains numerous links designed to appear as a link farm for free downloads, but ultimately redirects to a malicious URL. The ML classifier strongly indicated maliciousness, and the presence of a known malicious redirector URL confirms the intent to lead users to harmful content. No scripts were extracted, but the document structure itself is the attack vector.

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/pify?keyword=amicalement+votre+musique In PDF document text
    • http://files.novushwc.com/uploads/1/3/0/8/130814124/jenajadasiwumu.pdfIn PDF document text
    • http://files.nicolemarshallphotography.com/uploads/1/3/1/4/131454114/b7a25.pdfIn PDF document text
    • http://files.arkansasbearcreekgoldensanddoodles.com/uploads/1/3/1/3/131381612/finawusime.pdfIn PDF document text
    • http://files.sfachapterfootball.com/uploads/1/3/1/3/131380612/e1ab9d.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/1/0428/1437/4054/files/82086362657.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/13908697451.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6710/4664/files/common_action_verbs.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/4202/8190/files/lewejitipodifular.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1060/3677/files/zetebiguwabonorajadu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2597/2904/files/58249848562.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5715/9063/files/ae_templates_free_videohive.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3042/9346/files/sazaxe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6174/7605/files/52522645951.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6382/6840/files/rubalipa.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 5

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_off000086e9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x86E9 5120 bytes
SHA-256: bb6eeb9cb3254a4728a939ed8b72061f7e4edf26ccdbd1c168a76c82bb87a7d5
font_01_sfnt_off00009837.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9837 12296 bytes
SHA-256: 121a0da13e5950bb11eacc37257e4720bdecf43122be3e12a14e420ee5788ad5

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