Malicious PDF — malware analysis report

Static analysis result for SHA-256 86f4863ca368cc9c…

MALICIOUS

PDF

46.0 KB Created: 2020-08-24 01:09:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 032dbbb28b0fe027123200a640177158 SHA-1: 072c513f2f9a893c197687203588ea1c7e5ea546 SHA-256: 86f4863ca368cc9cbcdc21188f290ff33d685528c5d31c5988b0f1e4cc67b7e1
242 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

The PDF contains a lure suggesting a free Google Chrome download for macOS, which is a common social engineering tactic to trick users into clicking malicious links. The document body and heuristics indicate a link farm and redirector infrastructure, specifically pointing to `https://ttraff.com/pify?keyword=google+chrome++free+for+macbook+air`. This suggests the primary goal is to redirect users to potentially malicious content or malware download sites.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 7

  • 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.
  • LOLBin token sequence in document text high SE_LOLBIN_RUN_COMMAND
    Extracted document text contains a Windows script/execution tool name (PowerShell, mshta, cmd, rundll32, regsvr32, …) within 220 characters of a dangerous flag, command verb, or URL. This is a visible 'run this' instruction in HTML/PDF/RTF lure bodies, or — in macro-laden Office files — the macro's own string-pool entries appearing adjacent in extracted text.
  • Browser extension / update installation lure high SE_BROWSER_INSTALL_LURE
    Document tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
  • SEO-redirector lure link (multi-word utm_term) low PDF_SEO_UTM_REDIRECTOR_LINK
    PDF contains a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the search-keyword gateway used by the 'free document download' phishing family. Surfaced as an IOC; on its own this is a low-confidence signal.
  • 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=google+chrome++free+for+macbook+air In PDF document text
    • http://files.bonuselkantler.com/uploads/1/3/0/9/130969887/vobixa.pdfIn PDF document text
    • http://files.dcmdesignsonline.com/uploads/1/3/1/0/131070792/8754058.pdfIn PDF document text
    • http://files.warwickmixedhockey.com/uploads/1/3/1/0/131070845/db15e9364.pdfIn PDF document text
    • http://files.sandpointeshores.org/uploads/1/3/1/4/131406344/323e6fdf655b.pdfIn macro / runtime command snippet
    • 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/1/0429/1395/6006/files/convert_cdr_to_ai.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6775/8997/files/fozixidonaxik.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7673/0533/files/40360319037.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4935/2349/files/sisotuxi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3117/5063/files/nerivutitose.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6594/1922/files/vofijuki.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4301/3287/files/pebuxikogubovewuzuli.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5172/9567/files/reading_plus_level_k_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0820/4708/files/kubota_rtv_900_parts.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2698/7680/files/juremem.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/5470/3526/files/scriptures_on_business.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4694/5436/files/suluxamexezo.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000069f9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x69F9 4956 bytes
SHA-256: 6cb343ef8cac80021382328a38ead72e09e902d582b21fb91cd429bb06b9725b
font_01_sfnt_off00007ad4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7AD4 9996 bytes
SHA-256: fc9d19704f5664ca41c3607f4c895bfc5f239cdd43c9187b7eca8c31c8e1fcc8
font_02_sfnt_off00009d04.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9D04 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3