Malicious PDF — malware analysis report

Static analysis result for SHA-256 cd24e0f38650ed8b…

MALICIOUS

PDF

36.9 KB Created: 2020-08-12 12:01:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d94864b2a67ed86650a961feca7a500f SHA-1: 5dac55a1ff82e423a5e360ffb112f3c04174cb17 SHA-256: cd24e0f38650ed8b0fea5940668c1462bbc1aec6ae14d9d85a5c01ef697a2b9c
194 Risk Score

Malware Insights

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

The PDF document was flagged as malicious by a machine learning classifier and contains a large number of embedded links, indicating a link farm designed to redirect users. One of the primary links points to a known malicious redirector infrastructure at 'https://ttraff.com/wb?keyword=sram%20rival%2022%20crankset%20manual'. The document body itself is heavily obfuscated and contains some of these URLs, suggesting the primary purpose is to lure users to external malicious sites.

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/wb?keyword=sram%20rival%2022%20crankset%20manual In PDF document text
    • http://files.inmathclass.com/uploads/1/3/0/7/130740589/jipuraregap-pisojajo-dukefutanofoguz-gamov.pdfIn PDF document text
    • http://files.helloworldwerehere.com/uploads/1/3/1/4/131438474/mejefapitu-ligizuw.pdfIn PDF document text
    • http://files.ianburtphotography.co.uk/uploads/1/3/1/3/131380063/jetaga_bowenumogidap_ziwamokovujoduf_nuvotese.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8374/2884/files/virilopaxeduvisozab.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1848/4885/files/6970353379.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6826/8456/files/93710281645.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8578/3447/files/39059345684.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0451/4293/3657/files/nowilebevigusivirunuka.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4287/3249/files/84301139352.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4748/3552/files/angaraka_stotram_telugu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5144/1560/files/sogiperezezilezanaduk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/5759/1960/files/xarupog.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4783/0183/files/abnormal_pap_guidelines.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8303/8874/files/23524758897.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4227/5485/files/guparisodena.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 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000046af.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x46AF 5076 bytes
SHA-256: e653f8959bd8dc1dc4219b52bcd9d835b90a566df4b03faa95f450cbcefdb8d8
font_01_sfnt_off000057c9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x57C9 9640 bytes
SHA-256: 16f74be844a879705b81ea5ca07d92dec15c8481627d4747fb385618062cd22e
font_02_sfnt_off000078d6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x78D6 4324 bytes
SHA-256: 8405bb6ca9a6fb718a2e910e1cdde4d74ac2122cab0061dc5f772322db9c7ccd

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