Malicious PDF — malware analysis report

Static analysis result for SHA-256 82cd6efb55ca822e…

MALICIOUS

PDF

42.7 KB Created: 2020-08-13 07:45:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 516aee1613d471d7d4b69ba5573e5f1d SHA-1: a263279de50f5e731f8f414af2855071b3a26747 SHA-256: 82cd6efb55ca822e4eceeee3778cdec3b5a3cae4d457a3a22233b833414ce8bd
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded links, many pointing to Shopify domains, but one critical link directs to a known malicious redirector. This suggests a phishing or SEO manipulation scheme designed to lead users to malicious content. The ML classifier strongly supports the malicious verdict.

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=equidad+social+definicion+pdf In PDF document text
    • http://files.rcaleel.com/uploads/1/3/0/7/130738918/gaxijijaz.pdfIn PDF document text
    • http://files.meetmyshoes.org/uploads/1/3/1/4/131482892/98595d4f2a.pdfIn PDF document text
    • http://files.fpblair.com/uploads/1/3/2/6/132695465/vilitufepedi-zeruwuzudamij-kufadaja-muxonosiwasovu.pdfIn PDF document text
    • http://dusowebu.tarjetaverde.net/uploads/1/3/1/3/131380183/2127985.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/1/0431/2442/4870/files/5211449196.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7146/3831/files/ledelifogomifobapuwawaj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9336/7710/files/73258221106.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5442/3464/files/88668994107.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5032/6426/files/bifuligutodiloxuzezizuno.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3430/3912/files/24044741580.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4895/9142/files/55882268232.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/8387/2921/files/diddy_kong_racing_rom.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0449/5199/4536/files/ganpati_aarti_sangrah_marathi_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4973/8650/files/koruxakanob.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/wojilezufaguxulidumusad.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6628/5480/files/1579441772.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 4

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_off000069bd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x69BD 5136 bytes
SHA-256: cfe9e37f73ab98da4b8169dba8579ad47230f8e297c3f43a66a89a035f0f76b7
font_01_sfnt_off00007b4a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7B4A 10160 bytes
SHA-256: 278dd589493602b4d304665b03748594b8074904112af9ad1cfa0f16ad620cea

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