Malicious PDF — malware analysis report

Static analysis result for SHA-256 f8a686e0473a2d36…

MALICIOUS

PDF

42.7 KB Created: 2020-08-07 05:28:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 63d4fc99446831cdef7af1d629f1b499 SHA-1: f757bdc42fed9acbc9caa7a3f6c188520055d09a SHA-256: f8a686e0473a2d360befbfeaa1edb20a87a4d991d00362adea5699f1bad079c1
194 Risk Score

Malware Insights

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

The PDF document was flagged for containing a malicious redirector link and a large number of external PDF links, indicating a link farm. The primary malicious URL identified is https://ttraff.cc/pify?keyword=silmarillion+ainulindale+pdf, which likely serves as a gateway to further malicious content. The document body itself is heavily obfuscated and contains binary data, but the embedded URLs are the most significant indicators of malicious intent.

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=silmarillion+ainulindale+pdf In PDF document text
    • http://files.stjosephcabotpbm.com/uploads/1/3/1/4/131452944/4968378.pdfIn PDF document text
    • http://jebot.tjihouse.org/uploads/1/3/0/7/130776791/lobiwez.pdfIn PDF document text
    • http://tugisupu.khuloudkonsultancy.com/uploads/1/3/2/8/132815002/206e90fb1.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/1/0430/4217/7181/files/fuzowawesot.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/8861538602.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4995/1138/files/wuxag.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/81599599528.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7329/7814/files/rabixusegujil.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1162/1543/files/logiguguxuzewedakulol.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3626/9983/files/23812798409.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2192/4514/files/patofisiologi_asbestosis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3810/4985/files/calendario_2020_para_imprimir_com_feriados.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4582/1338/files/jogifu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/646255477.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1503/5288/files/husqvarna_445_parts.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7120/1699/files/mimemotu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3267/2418/files/59606007130.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/2263/6440/files/functionalism_architecture.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_off000069b8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x69B8 5112 bytes
SHA-256: 30c3e9237ef61d29be02e9f63d667f192a49706da72cdc0dbe2b30c7abc4f6ee
font_01_sfnt_off00007b05.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7B05 10056 bytes
SHA-256: c3ae2ab5c37f93a16910b334cf36b3369c61fdf2c6268ba18fad5d60042215ba

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