Malicious PDF — malware analysis report

Static analysis result for SHA-256 d98478d375cc3483…

MALICIOUS

PDF

77.1 KB Created: 2020-08-12 09:00:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 4b2de675def71723b54b01a4feaffe5e SHA-1: 03c76059b96fde89d7468d817d7cbc04e8f1c602 SHA-256: d98478d375cc3483d3997f9bc08b3cf5b718e5bf3f4642ae77e91ee8c34ddbc6
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, specifically pointing to 'https://ttraff.ru/pify?keyword=cerebellar+disorders+pdf'. This indicates the document's primary purpose is to redirect users to malicious infrastructure. The PDF also contains a large number of external links, suggesting a link farm or SEO poisoning tactic to increase visibility. 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=cerebellar+disorders+pdf In PDF document text
    • http://files.thetraveleducator.com/uploads/1/3/0/9/130969057/lawobosi.pdfIn PDF document text
    • http://files.marinerswelfare.com/uploads/1/3/0/8/130813991/gupul.pdfIn PDF document text
    • http://komapo.neurovestibular.com/uploads/1/3/1/3/131383314/eb3052693.pdfIn PDF document text
    • http://files.iccspa2020.com/uploads/1/3/1/4/131438557/c0d1c3499fd78db.pdfIn PDF document text
    • http://files.alimaclaurin.net/uploads/1/3/0/8/130874162/5008371.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/1/0431/0577/9863/files/htst_pasteurization.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1382/4927/files/18036323983.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0819/4722/files/anthony_giddens_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9436/8663/files/xafuxarosanod.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7148/8668/files/depovunelurofopazud.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0450/0806/0574/files/71595841291.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4026/0775/files/25947558501.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8365/2506/files/76493169984.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4281/5643/files/65056391812.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0645/2127/files/35492992868.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5440/7580/files/gafijogewerovufefudamanu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7487/1711/files/caries_classification.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1311/9905/files/41554850452.pdfIn PDF document text
    • https://medlineplus.gov/cerebellardisorders.htmlIn 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_off0000f1b9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF1B9 5080 bytes
SHA-256: 9c2d0d8959de3577f95ed37da5ded064f87bb7127150a4965e4a4e4a1479db30
font_01_sfnt_off000102fd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x102FD 10756 bytes
SHA-256: 4e3d895db95b18761e13ab8cabde6380454a4464867b9e42b58d61e456caf97e

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