Malicious PDF — malware analysis report

Static analysis result for SHA-256 8fd6968a4ef1b814…

MALICIOUS

PDF

46.3 KB Created: 2020-08-17 00:25:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 878ad62d9c4783890a8017878188d148 SHA-1: 778a9c3134d46ad2ee6de65c3b71bdc5957d2fdf SHA-256: 8fd6968a4ef1b81453b4e7cc93ef8a49fb4f22f54e9e8ce11a93192a8a045319
194 Risk Score

Malware Insights

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

The PDF contains a link farm and a specific URL, 'https://ttraff.ru/pify?keyword=block+sites+on+android+chrome', which is flagged as a malicious redirector. This suggests the document's primary purpose is to redirect users to potentially harmful content by masquerading as a helpful guide. The presence of numerous links, many pointing to Shopify, indicates an attempt to leverage SEO or create a broad distribution network for the malicious redirector.

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.ru/pify?keyword=block+sites+on+android+chrome In PDF document text
    • http://files.thesaltandlightacademy.com/uploads/1/3/1/3/131397955/7797438.pdfIn PDF document text
    • http://buzeko.oakpointechurchbradenton.org/uploads/1/3/0/9/130969808/miwimeva.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/1/0433/7349/4430/files/39365828738.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6567/8755/files/concepto_de_historia_clinica_psicologica.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6592/3992/files/88249562521.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6772/8279/files/80218573702.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4070/9527/files/venous_ulcer_vs_arterial_ulcer.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/8116/9051/files/68683947165.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0582/8520/files/pofigalovumadasobulolibo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8507/9452/files/dogijufa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9842/3967/files/64830645684.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0229/8521/files/91736667358.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3966/1981/files/ridemowefijajejosozanama.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7405/0458/files/bwv_1007_guitar.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 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_off00007784.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7784 5292 bytes
SHA-256: c5948e381f55792bed1455447f28df283118fd8f770829c6d896b5ff2b057327
font_01_sfnt_off0000894d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x894D 10360 bytes
SHA-256: fae7b084ec05fcc37510791ff0e2b1a8b9be41eeffb549fe39ca01911cb2a54b

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