Malicious PDF — malware analysis report

Static analysis result for SHA-256 47ff42424509dcd6…

MALICIOUS

PDF

40.3 KB Created: 2020-08-21 20:08:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 73f1d5ce2d1b9db9a75bd47035a421d2 SHA-1: 41c56b0ea00a01e41f72dd4d42b5e67193ab8891 SHA-256: 47ff42424509dcd611049b98888883fbaba46d082a70b2f90aa16d1ff4243ea6
194 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.ru/pify?keyword=examining+digit+place+values+common+core+sheets'. This indicates the document's primary purpose is to redirect the user to a potentially harmful site. Additionally, a PDF SEO link farm heuristic was triggered, suggesting the document is part of a larger effort to generate traffic or distribute content via numerous links, many hosted on Shopify. No scripts were extracted, but the embedded URLs and the nature of the heuristics strongly suggest a phishing or malware delivery attempt.

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.ru/pify?keyword=examining+digit+place+values+common+core+sheets In PDF document text
    • http://files.nicholasalfredo.com/uploads/1/3/0/7/130739693/2612642.pdfIn PDF document text
    • http://files.montclairpsychicschool.com/uploads/1/3/0/9/130969543/c2d751f94f89d70.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/1/0436/0906/3582/files/3264767584.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9350/8771/files/46586631652.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0457/8118/8774/files/takuma.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/7501/4566/files/zexinedipivoxesul.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9245/8152/files/77091121448.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7437/9164/files/aashto_lrfd_8th_edition_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6377/9240/files/bimepe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/mowajuvide.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 6

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

Full JSON: related samples API

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004100.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4100 5572 bytes
SHA-256: 4d4ead9687820ec4e1e8e22009c2f4fc7e657e021787da95721d29cc9b73d217
font_01_sfnt_off000053c4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x53C4 1704 bytes
SHA-256: d4ed4897cac276ad8b4432568dbc6a6dc4e77cab6327dc0d74daf3897b35b229
font_02_sfnt_off00005c45.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5C45 9944 bytes
SHA-256: d4ee9058d5b038d6817fb0eae6708832b210e735dd565fb7efee9d60114d5b1d
font_03_sfnt_off00007e63.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7E63 16268 bytes
SHA-256: 2f4327e71332ec50a8853bbb0819e9ec20575883e77e582eeae36ba47425260e

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