Malicious PDF — malware analysis report

Static analysis result for SHA-256 9f15913aa648825f…

MALICIOUS

PDF

41.8 KB Created: 2020-08-17 04:03:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: 9d89b9e82dda90b16f05f61aaacc351e SHA-1: 8ed375c0c07fbc22c58ea76091b0c55f3bf05d29 SHA-256: 9f15913aa648825f6fb34f2106fed04f0fdbafb876261b804a1cd142310a1a24
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many pointing to Shopify domains, but one critical link directs to a known malicious redirector. This suggests a link farm or phishing lure designed to lead users to malicious content. The ML classifier also strongly indicated maliciousness.

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=allcast+premium+apk+direct In PDF document text
    • http://files.huyckpreserve.org/uploads/1/3/2/6/132682639/kudenomolapirado.pdfIn PDF document text
    • http://dirutino.updosstudio.com/uploads/1/3/1/4/131483281/3104351.pdfIn PDF document text
    • http://files.crestridgefarms.com/uploads/1/3/0/7/130775462/kadalel_lapitopig_ralidukefigi_libujelowowox.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/1/0428/3082/3583/files/keep_track_of_your_bills_template.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2281/0263/files/lekixetoxo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0392/6938/files/nozajinokunikifuxavofag.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2541/6860/files/low_back_pain_home_exercises.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1446/3394/files/lazemisatu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3848/1320/files/68637820680.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/7454/9928/files/50558818647.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0781/8398/files/adverbial_phrases_worksheet_with_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0458/3318/files/matebugaguwezunakajofaza.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3346/8839/files/33072372254.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2439/2087/files/nom_035_riesgos_psicosociales.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0118/3397/files/tesis_sobre_alcoholismo_en_adolescentes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/5650/5756/files/numoze.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_off000062f5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62F5 5272 bytes
SHA-256: bae672f7c350d89dcaa53ac2f77b7c40361fbef8376daf62119f4ed03b70900a
font_01_sfnt_off000074c7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x74C7 12028 bytes
SHA-256: b88cbadf2385794a9f344ae054f7320ead48bfdc89dc5b6bc30882d676a35738

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