Malicious PDF — malware analysis report

Static analysis result for SHA-256 7c13ad868a9b5925…

MALICIOUS

PDF

43.0 KB Created: 2020-08-20 21:59:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: e3723893eecfd4fab1796c7fdcd56ea8 SHA-1: e174c5a384907916848b543feb9e34b43ec354f7 SHA-256: 7c13ad868a9b5925b729732212934a126ba22f45e4964629f1141bf4c471cfd5
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

The PDF contains multiple heuristics indicating it's a malicious redirector, designed to host a link farm. The embedded URL and document body text suggest a phishing lure for a 'secure folder android alternative', which redirects to the malicious infrastructure at 'https://ttraff.cc/pify?keyword=secure+folder+android+alternative'. 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.cc/pify?keyword=secure+folder+android+alternative In PDF document text
    • http://nojesoga.safespacesupervision.co.uk/uploads/1/3/2/6/132695839/8017293.pdfIn PDF document text
    • http://zizejaxod.furryfriendsofscotland.com/uploads/1/3/0/7/130738909/2ec2e258ab6af0.pdfIn PDF document text
    • http://zekafejof.caregiverinspirations.com/uploads/1/3/0/9/130969279/risod.pdfIn PDF document text
    • http://files.bluesology.net/uploads/1/3/2/6/132682806/mewug.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/1/0432/8144/9126/files/giledadedep.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/ziwodukujaluladiludu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1910/6466/files/lorigafagibomisi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4715/6903/files/adjectives_superlative_and_comparative_worksheets.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5488/1175/files/expressing_your_feelings_worksheets.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2504/7463/files/dnd_5e_artificer_revised_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8982/1845/files/blood_relationship_tricks.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7731/2405/files/46947934717.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6406/6201/files/xv2_mod_installer.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4843/4840/files/hp_envy_4500_printer_driver.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0444/2708/3943/files/ben_hur_movie_tamil_dubbed.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6403/3429/files/35220135329.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6268/8918/files/sistema_circulatorio_fisiologia.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_off00006bde.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6BDE 5000 bytes
SHA-256: a8b7a79c7361b7cbf1e79848f8ce44e7020f23c263fd98a32502121936659984
font_01_sfnt_off00007cee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7CEE 9848 bytes
SHA-256: fdc30b86d8b197660ec5a01159ca91c3829c2fe1f2249a6ae02304b4cdda1a0f

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