Malicious PDF — malware analysis report

Static analysis result for SHA-256 e4f49e1772eec31d…

MALICIOUS

PDF

47.8 KB Created: 2020-08-01 12:06:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 82a1a04179eda06c5384726065fb427a SHA-1: 5a1b6f4c51189c78fe906f1f458a9cbe5ee7a8ae SHA-256: e4f49e1772eec31d494a68ac680795c85bffef1adef4a7839fdb99832292a938
194 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.ru/pify?keyword=speed+up+rsync'. Additionally, it exhibits characteristics of a PDF link farm, with numerous external links. The document body, though heavily obfuscated, contains the same redirector URL, suggesting the primary intent is to redirect the user to malicious infrastructure. No scripts were extracted from this sample.

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=speed+up+rsync In PDF document text
    • http://files.recoveryusingthebible.com/uploads/1/3/0/8/130813063/5825720.pdfIn PDF document text
    • http://files.yolga.nl/uploads/1/3/0/7/130775518/velirijitarafuvos.pdfIn PDF document text
    • http://files.fromoureyes.com/uploads/1/3/0/7/130775701/xugerobulolazowelos.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/1/0433/0084/7781/files/43084979076.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/2891/9973/files/35104877344.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/8773/8533/files/87133550682.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0936/7461/files/lagexakejavoxilif.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6925/1487/files/92226729202.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8915/8554/files/relion_wrist_blood_pressure_monitor_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6660/5211/files/fufeluwevipidatikaka.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7976/8995/files/33059757063.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/baxumedufimoval.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/xajubebajodefemun.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8579/8301/files/59992690887.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6926/7354/files/kapidufizasiruzaw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7155/3189/files/79971302202.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3893/1109/files/lavalubowibuzejopel.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 2

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_off00007d28.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7D28 5032 bytes
SHA-256: 0a924eb9c889c3de8fe2dd6cb035cb39545874596f0f6cc312e4cbcb3dbe8d61
font_01_sfnt_off00008e5d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8E5D 10516 bytes
SHA-256: bb28a1c185d905488279ccd7429efd9f896dd931e44d63725a3bad407118a74c

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