Malicious PDF — malware analysis report

Static analysis result for SHA-256 1a7a26cbb90a4fbe…

MALICIOUS

PDF

86.2 KB Created: 2020-08-19 10:04:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 025e261bc7d7e6eeca511d1ab958cf37 SHA-1: 98286f21d40c2687dc08f6001d838201b2dbf178 SHA-256: 1a7a26cbb90a4fbecd47cbd079271e3bab61dc7b7342cec682029eeb171951c7
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a large number of embedded links, many pointing to Shopify domains hosting other PDFs, a technique often used for SEO poisoning or to obscure malicious links. One critical heuristic identified a link to a known malicious redirector, ttraff.cc, which is used to obscure the final destination. The ML classifier also strongly indicated maliciousness. No scripts were extracted, but the primary attack vector appears to be the redirection to malicious infrastructure.

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=sound+of+angry+birds+app In PDF document text
    • http://gufoguruj.falconandhawke.com/uploads/1/3/2/6/132696048/mubemofifa-polere.pdfIn PDF document text
    • http://files.texasgulfrecord.org/uploads/1/3/1/6/131636941/72c12e77117976.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/1/0429/6074/8695/files/gambar_animasi_lucu_kartun.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/5621/5702/files/9261708132.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/7959/6187/files/cordon_umbilical_corto.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2412/9952/files/57135175770.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9318/1087/files/83325647019.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0840/9250/files/8070045681.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0088/7456/files/8637268052.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/8462/5558/files/affidavit_of_loss_id_sample.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1002/2814/files/admission_enquiry_form_in_html.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9716/9824/files/41947733590.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5348/2135/files/girosolosisowufob.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0151/2090/files/tikirililawase.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6741/5457/files/pdf_agama_hindu_kelas_11.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
🗂 Part of campaign: ionamccuaig.co.uk 3 samples

Related samples 2

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_off000112b3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x112B3 5520 bytes
SHA-256: 54300b4d869ec8b93dcf68e5e5f1570e927de10f55b100f94cfda2ec35652687
font_01_sfnt_off00012586.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12586 11380 bytes
SHA-256: 7e0ac8b7e30990490681d3849181126f69a1fee1c060ecc1635a04fd1379c60c

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