Malicious PDF — malware analysis report

Static analysis result for SHA-256 8bce8f7d3e74b1ab…

MALICIOUS

PDF

43.5 KB Created: 2020-08-07 18:27:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: cce77182a83bdb54231469549d75ddb8 SHA-1: 33f24cc6aefe5047fc916a93b5ef74d3632fdc76 SHA-256: 8bce8f7d3e74b1abb6a49d7f488e7d94055e00bb1ed0bdfb15c757f787c73cbe
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic firing for a link to a known malicious redirector infrastructure at 'https://ttraff.com/pify?keyword=best+pdf+app+for+ipad+pencil'. Another critical heuristic identified a PDF link farm, suggesting a tactic to artificially inflate search engine rankings or distribute malicious links. The document body, though heavily obfuscated, contains references to these URLs, reinforcing the malicious intent. No scripts were extracted, but the PDF structure and embedded links strongly indicate a phishing or redirection attack.

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=best+pdf+app+for+ipad+pencil In PDF document text
    • http://files.intentionalenrichment.com/uploads/1/3/0/7/130775484/nixenuz.pdfIn PDF document text
    • http://files.fpcroswell.org/uploads/1/3/2/6/132682681/pazikegilor_nubugipejapuv.pdfIn PDF document text
    • http://files.sobrightandbeautiful.net/uploads/1/3/2/6/132682542/vutit.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/1/0438/1881/1552/files/kegizezowakejolazate.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6481/1935/files/medifodivikexasigukuxi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8954/2809/files/anandamela_pujabarshiki_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5943/6951/files/90743873275.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6617/9230/files/48118917259.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0451/7157/2885/files/phenol_formaldehyde_resin_manufacturing_process.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9235/2932/files/fizolawutatatilopizuwuba.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1234/8315/files/neuropathy_diabetes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2259/7796/files/digezalawemobutozipir.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5893/8531/files/31251032293.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/3464/6440/files/fafadi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4470/9276/files/vezupevatomumo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9413/8277/files/damezitufotagasino.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006cf6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6CF6 5200 bytes
SHA-256: c809cf6636f4d5bd3401dead2813e75a150332ae3ff1695f6157e4c5845a7718
font_01_sfnt_off00007eb4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7EB4 10024 bytes
SHA-256: 4374a0da38a5c99e07baa660b4c9371c03dfe80c0083ca446551c9c8f5648556

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