Malicious PDF — malware analysis report

Static analysis result for SHA-256 82caa5f9baa57cc6…

MALICIOUS

PDF

44.0 KB Created: 2020-08-14 10:05:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 8f663fe0ec70e1ae6157c28c557ac1d0 SHA-1: 82390309257b3a356ffefd1a618b0be3cfc999a5 SHA-256: 82caa5f9baa57cc61173cabf7edb6ff37a98cfeb92a387ed01633db6bdd8309e
202 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous links to external resources, including a redirector at 'https://ttraff.cc/pify?keyword=fantasy+football+cheat+sheet+2019+yahoo', suggesting a link farm or phishing lure. The ML classifier strongly flagged this PDF as malicious, and heuristics indicate it's a redirector designed to lead users to potentially harmful content. The document body, though heavily obfuscated, contains references to the lure and embedded URLs.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=fantasy+football+cheat+sheet+2019+yahoo In PDF document text
    • http://files.earlynutritionmeeting.com/uploads/1/3/1/8/131860204/wikezin.pdfIn PDF document text
    • http://files.clickclackfitness.com/uploads/1/3/0/9/130969352/lukanowazu.pdfIn PDF document text
    • http://digilem.alexoconnor-onlineportfolio.com/uploads/1/3/1/0/131070450/ff5abcb118fd7c.pdfIn PDF document text
    • http://files.engiellepaguican.com/uploads/1/3/2/7/132712324/486824.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/1/0432/7879/4920/files/68897032839.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5117/9416/files/54533591831.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5442/3445/files/63539714274.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3551/5290/files/21765652818.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2753/7828/files/savidate.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8858/4605/files/i_doser_mp3.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0972/7912/files/how_to_draw_a_3d_rectangle.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9411/4457/files/vupojibut.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0189/6347/files/wepojevaju.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7505/0395/files/vodekaxejawifobirato.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7851/6885/files/ledor.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
🗂 Part of campaign: engiellepaguican.com 4 samples

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006b01.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B01 5552 bytes
SHA-256: 7ebd7586373d33d0c99be034183420d38146b90c31582ef4764a1692fc67f775
font_01_sfnt_off00007df1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7DF1 11104 bytes
SHA-256: 6591ebea013b859d05af0ba7d5144496f14bbc80d750659edd32d2a93fa2eb95