Malicious PDF — malware analysis report

Static analysis result for SHA-256 c1b4e995caa59b57…

MALICIOUS

PDF

35.6 KB Created: 2020-08-28 09:38:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 855fa6ee56e0f8c67838a2e5921e2d80 SHA-1: c085419a0c19a5657da71f76081b6004a8c8c330 SHA-256: c1b4e995caa59b57829469a67532a160d9d6d12a1aafcdd4d29609dfc0bf85e1
194 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, a common tactic for phishing or malware distribution. One critical heuristic firing indicates a link to a known malicious redirector at 'https://ttraff.cc/pify?keyword=mlp+cutie+marks+maker'. Another heuristic identified a large PDF link farm, with the first URL pointing to 'https://cdn.shopify.com/s/files/1/0432/1126/0062/files/total_war_attila_himyar_campaign_guide.pdf'. The presence of these links suggests the document's primary purpose is to direct users to external, potentially harmful, content.

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=mlp+cutie+marks+maker In PDF document text
    • http://files.dellavellaremodel.com/uploads/1/3/0/7/130740141/wugodiwubukesel.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/1/0432/1126/0062/files/total_war_attila_himyar_campaign_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6635/2025/files/75383782173.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6957/8147/files/priceless_the_myth_of_fair_value_summary.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5158/8507/files/92040555631.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3849/8206/files/63218967729.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1190/7488/files/cara_membuat_surat_lamaran.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1756/0473/files/cdl_manual_ny.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9323/7665/files/jidewaxubivejoxed.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2171/9959/files/xasuj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6926/8373/files/89018362896.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6680/9765/files/difference_between_amorphous_and_crystalline_solids.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9322/1783/files/70079211840.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7613/2774/files/starbucks_barista_espresso_machine.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_off00004dc5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4DC5 5148 bytes
SHA-256: 733de70f9405c159d4405d28fb1ce1b4dda38b291ac047e961663fd5bf143e7f
font_01_sfnt_off00005f33.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F33 10176 bytes
SHA-256: 7469ca2835718d9fd8689d0b3973bd75096421cd2821439381afb67991a9efe9

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