Malicious PDF — malware analysis report

Static analysis result for SHA-256 3673cae04ecedb4f…

MALICIOUS

PDF

56.8 KB Created: 2020-08-12 04:58:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 093f0285e0a2021ef14ae4a44dae3a61 SHA-1: 2740eb539e9486232ec5e13b3457b5c277c7b3fa SHA-256: 3673cae04ecedb4f99e170b0ffb3a36c4beccd1fc68bf697984c427439137c4e
194 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with a primary link pointing to a known malicious redirector. The document body, though partially corrupted, suggests a lure related to an 'Avon catalog'. The ML classifier strongly indicated maliciousness. The primary malicious IOC is the redirector URL, which likely leads to further malicious content or phishing pages.

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=catalogo+avon+campa%25C3%25B1a+9+2020+mexico+pdf In PDF document text
    • http://files.merizzi-psychotherapy.com/uploads/1/3/1/4/131453143/cf8e15c4a.pdfIn PDF document text
    • http://files.suetastic.com/uploads/1/3/0/7/130740551/1608866.pdfIn PDF document text
    • http://puvazexe.spinteesprints.com/uploads/1/3/1/8/131871721/sifemowamil.pdfIn PDF document text
    • http://files.sudburyrocksmarathon.com/uploads/1/3/1/4/131483143/0845ecd8d1de.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/1/0432/3295/2477/files/dawedodifojanafapug.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0455/7878/0837/files/13942610255.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/5865/7430/files/class_11_python.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4777/9494/files/binary_search_tree_iterator.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/98455436519.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4375/7992/files/alphabet_letters_images.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5856/1173/files/paganini_caprice_24.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9739/1265/files/piwofipotonekadanezulud.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5886/4028/files/95438666393.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 7

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_off00008ef7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8EF7 5876 bytes
SHA-256: 23b63fe30b676884e51f1c339cd8bdbf2ac1aea15db391d1525fd0c9437d90ec
font_01_sfnt_off0000a2bb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA2BB 16520 bytes
SHA-256: bcadb590ef76fd393fff9ba40416c514afffe97d4ee9fa16048e03b28e31e704

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