Malicious PDF — malware analysis report

Static analysis result for SHA-256 863fc81c57f7681c…

MALICIOUS

PDF

51.2 KB Created: 2020-08-09 15:43:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 9791d1125cca891fb4c99f261721112c SHA-1: 6a9493485c37db7e7f6daa65ea1fec6f8bd3ec8b SHA-256: 863fc81c57f7681ca02259ade4fa62512c856d62eb91387eb1a0b56af583b056
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple heuristics indicating malicious redirector links and a link farm, pointing to a phishing or scam attempt. The primary lure URL, 'https://ttraff.com/pify?keyword=rational+fasting+challenge+pdf', is identified as a malicious redirector. The document body, though heavily obfuscated, contains text fragments that reinforce the lure.

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=rational+fasting+challenge+pdf In PDF document text
    • http://files.communityfarmersmarketbg.com/uploads/1/3/1/0/131070872/setiwezukusuz-puderojogibado.pdfIn PDF document text
    • http://wenix.globalnomaddy.com/uploads/1/3/2/3/132302782/voxiz.pdfIn PDF document text
    • http://files.brunswickbands.org/uploads/1/3/0/8/130814980/527727.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/1/0431/5018/0503/files/bilegazabalanuseruro.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8457/0019/files/attachment_style_quiz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/gamusuzojikifikukudubug.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0131/4454/files/5797800531.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3888/3495/files/72934680084.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9775/1709/files/1121068974.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1117/7629/files/92666351703.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6989/8913/files/business_law_notes_kenya.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5799/4138/files/blancanieves_y_los_7_enanitos_cuento.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5173/6488/files/bulaponigijokimusaxudodiw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9280/3744/files/piridizul.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6065/8333/files/sirogipaxedetoxazibuwokew.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/5090/7286/files/zozejipuwinaregadiram.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1119/3501/files/21727530559.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 6

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_off00008a44.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8A44 5328 bytes
SHA-256: bde40dd144b85c5fbf67fd044dcc837548d0b3c1fe9865277db6af5f26454f44
font_01_sfnt_off00009c74.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9C74 10236 bytes
SHA-256: 16bb9b22f5fd84da6575e36e173f8582540799e919c200bb5461c279b6e1c5e5

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