Malicious PDF — malware analysis report

Static analysis result for SHA-256 30728d987aa5438f…

MALICIOUS

PDF

41.5 KB Created: 2020-09-29 22:36:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 2c714e221f0a4910fb103b7036e32ff3 SHA-1: 28a01a8e42c7f83f0f043f2869fb0f96c756e743 SHA-256: 30728d987aa5438f1e2348f2e9d3222ad68b06b7b693c10bc940a88154a52183
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to a link farm hosted on cdn.shopify.com. One critical heuristic identified a link to a known malicious redirector infrastructure at 'https://gettraff.ru/strik?keyword=atopic+dermatitis+patient+information+pdf'. This suggests the document is designed to redirect users to malicious sites, likely for phishing or malware distribution. 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://gettraff.ru/strik?keyword=atopic+dermatitis+patient+information+pdf In PDF document text
    • http://files.greyteakettle.com/uploads/1/3/1/4/131453749/1399889.pdfIn PDF document text
    • http://files.csureddies.com/uploads/1/3/2/8/132815750/712975.pdfIn PDF document text
    • http://files.cvpitvn.com/uploads/1/3/2/8/132815866/3ed40e06ca479.pdfIn PDF document text
    • http://files.averagejoeministries.org/uploads/1/3/2/7/132740463/d49d9.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/1/0433/6143/5813/files/lakimazakevusevup.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/6587/9957/files/casio_fx-9860g_au_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4751/0435/files/5e_acquisitions_incorporated.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/7019/1771/files/xizowid.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0078/1208/files/greek_god_wind_north.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7077/5706/files/rural_marketing_notes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/8589/3542/files/accounting_term_paper.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9978/2309/files/overload_assignment_operator_c_template.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6520/5141/files/vafiwaj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8544/7833/files/kaxuvid.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7222/5442/files/34725457066.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0471/0282/0502/files/central_machinery_manual_tire_changer.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
stream_004_off00007508.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x7508 10576 bytes
SHA-256: f46c64ffe873c66c3a7f87a9e610e78e1fcb4594623325cfbf9a47b4ffccee4a
font_00_sfnt_off0000633f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x633F 5260 bytes
SHA-256: f05a6d5be4eb09bc948ba55d9098a1fbab0a9206ceaae17c21a4429b129d8b32

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