Malicious PDF — malware analysis report

Static analysis result for SHA-256 202f1dabc12b2b25…

MALICIOUS

PDF

44.6 KB Created: 2020-08-02 05:28:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: c5af70a913479bb949218d9c9568027d SHA-1: 877150a88fad33d5281b922227759bef38ce275e SHA-256: 202f1dabc12b2b25d2fa6208cfee4eaecab23c8b6b019074afbc0bd0273ee0f3
194 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with a primary malicious redirector URL pointing to 'https://ttraff.ru/pify?keyword=scott+gilbert+developmental+biology+10th+edition+pdf'. This indicates a likely phishing or malware distribution attempt. The ML classifier strongly supports the malicious verdict.

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=scott+gilbert+developmental+biology+10th+edition+pdf In PDF document text
    • http://files.ampgrp.org/uploads/1/3/1/6/131636586/8a69030487f.pdfIn PDF document text
    • http://files.oswegoeasthighschoolbands.com/uploads/1/3/1/4/131438418/6551688.pdfIn PDF document text
    • http://files.andrewdeckergamedev.com/uploads/1/3/2/3/132303181/xesenavekobafer-koleke-kewukilokete.pdfIn PDF document text
    • http://files.tromakenerji.com/uploads/1/3/1/4/131437443/691c860e088.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/1/0436/9373/6089/files/43867958708.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1510/0826/files/65448787666.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/2671/6584/files/84011873204.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1028/3931/files/9742520845.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4590/3774/files/zefibilabitituw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9451/5614/files/sisetalenifoxagajo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4571/5109/files/rapivoz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0096/9896/files/gixavaxutezasumalipitot.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8627/4967/files/zapenajulebakafa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/32878299647.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3193/6674/files/56641149007.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_off00006ed0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6ED0 5988 bytes
SHA-256: 1282ea7860c0bb07539e803f09a992ac7c392aa27be44d51c78800fc7042ef0d
font_01_sfnt_off0000831e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x831E 9944 bytes
SHA-256: 244a38666568a7fe9a806a40d2f4f7f3efbfc580eb500be2ce40d0943ee7d0c6

Open this report in the interactive analyzer, or submit your own file for analysis.