Malicious PDF — malware analysis report

Static analysis result for SHA-256 a4ea82a719c89b5f…

MALICIOUS

PDF

43.1 KB Created: 2020-08-04 14:40:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: be82467954abc8d7d4c14607574450f2 SHA-1: f6e1594d87cca37d6ea086d631c28283f90be1ff SHA-256: a4ea82a719c89b5fbbf50a104957591df3bb8dda8c62b0d6c77243845357fea5
194 Risk Score

Malware Insights

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

The PDF was flagged as malicious due to a high number of embedded external links, many pointing to Shopify domains, but one critical link to a known malicious redirector. The document body, though heavily obfuscated, contains the URL that leads to the redirector. This suggests a link farm or redirection attack designed to lead users to 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=case+interview+secrets+online+pdf In PDF document text
    • http://files.annastark.com.au/uploads/1/3/1/8/131856131/040143ad.pdfIn PDF document text
    • http://files.bluelabelconsulting.com/uploads/1/3/1/1/131164273/mepivonozesigu.pdfIn PDF document text
    • http://files.eugenemontgomery.com/uploads/1/3/1/4/131438766/zesolabugilobe.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/1/0432/3436/1508/files/32254264731.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9997/9930/files/davogepekuletox.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8792/8223/files/34717690618.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/22271122494.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/kefemomorevogik.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1618/3198/files/63085917094.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9896/4117/files/transistor_amplifier_tutorial.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4277/4935/files/bafimowojetononujiga.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5782/3390/files/breathing_exercises_to_strengthen_lungs.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1619/0112/files/72636776952.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1723/8685/files/mojisabatum.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2422/0321/files/cambridge_international_dictionary_of_english_book_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5666/7551/files/bowopozuxeniwanabapim.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2929/1427/files/pukexasiwaki.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000069fd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x69FD 5204 bytes
SHA-256: 474f2c74d8898c2a4533f073e630fb6c63f8c10313ab44316b1ff4a504d77905
font_01_sfnt_off00007bd6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7BD6 10420 bytes
SHA-256: 7a1c3d33c3e6df4e6735a39c7578359fa412e4d94281e9fb3e23c537911fd3d4

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