Malicious PDF — malware analysis report

Static analysis result for SHA-256 322ca466e5d225c8…

MALICIOUS

PDF

46.4 KB Created: 2020-07-30 14:44:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 966301e9c28ace8dc603c0d37f12b4d7 SHA-1: a7f08019468774d07bd10f694b9067dbd9511764 SHA-256: 322ca466e5d225c8edb06894962ae3ad55c0a6dce970428c6d8dc88396895f5e
194 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to a redirector service. The document body, though heavily obfuscated, suggests a lure related to 'classification of cataract pdf'. The primary malicious IOC is the redirector URL, which is likely used to funnel victims to further malicious 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.cc/pify?keyword=classification+of+cataract+pdf In PDF document text
    • http://files.cdestinydesigns.com/uploads/1/3/0/7/130775391/cfb91e1629fe6a.pdfIn PDF document text
    • http://files.flowersfromthedead.com/uploads/1/3/1/4/131437005/mutuwafefatobe-nixebopim.pdfIn PDF document text
    • http://files.charleyshairdressing.co.uk/uploads/1/3/2/6/132695629/gawusezijotavaluz.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/1/0432/8259/6004/files/58567887073.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0485/3402/files/voniralizuwufomesisiwar.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2439/2087/files/tijudumilexuvelimoteti.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2073/0011/files/56373074525.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3487/7850/files/87964400582.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3006/0955/files/4658476069.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0952/3355/files/44850458494.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6649/1042/files/43047481139.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8427/5100/files/rarukafawaninotikimipifi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5104/9370/files/matogezomivibalavuri.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4684/6107/files/fovepofabajefe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/banefidofekadozimodomi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0174/1463/files/63529856749.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_off000078fe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x78FE 4840 bytes
SHA-256: 8cb1dd1515046d586df3b2bec8ee8523dd54ba3790024d2aa2454edb36d5b55f
font_01_sfnt_off00008974.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8974 10220 bytes
SHA-256: 980766442798962d141c1a19d93a30ccea2f05873e0755eda95e8ffcddd9cb85

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