Malicious PDF — malware analysis report

Static analysis result for SHA-256 82a86cb6573be455…

MALICIOUS

PDF

44.3 KB Created: 2020-08-24 02:21:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 7d915e2c7cc96a0650e1ee8d09d387b4 SHA-1: a2d03fde282c7f3d6a263c4aa069e16a706421f0 SHA-256: 82a86cb6573be455dd3500c302b2039bdc2ece4f998d953a3953af0a2382c5b0
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a large number of embedded links, many pointing to Shopify domains, but also includes a critical link to a known malicious redirector at 'https://ttraff.ru/pify?keyword=o+alienista+hq'. This suggests the document is part of an SEO link farm or phishing campaign designed to funnel users to malicious sites. The ML classifier also strongly indicated maliciousness.

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=o+alienista+hq In PDF document text
    • http://files.rabbitholerealestate.com/uploads/1/3/2/6/132681316/relituruvufarimukox.pdfIn PDF document text
    • http://xikafi.pietropolitano.com/uploads/1/3/0/7/130739059/5299836.pdfIn PDF document text
    • http://files.rubiis.com/uploads/1/3/1/3/131379894/3562985.pdfIn PDF document text
    • http://wumomiwad.keywestrickburnett.com/uploads/1/3/1/3/131380550/bivajolonifirib.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/1/0431/4827/9957/files/64535177251.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3459/1907/files/asmedia_usb3._1_driver.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7142/9016/files/kikosuki.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4433/8838/files/fuvesevevomax.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3282/9342/files/xudidilewijulolane.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8343/2096/files/business_plan_proposal_examples.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8307/1650/files/openstax_calculus_volume_2.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1540/4695/files/tikalisogixonumavila.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6971/8172/files/guxikuvowawesipujomito.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2110/5309/files/38929123422.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/1761/4998/files/comma_in_complex_sentence_worksheet.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 5

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_off00007198.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7198 4828 bytes
SHA-256: e694139ed330f3ad3504917a4e3fe18b7e22494fe101d46b7b533191eade4423
font_01_sfnt_off00008208.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8208 10136 bytes
SHA-256: 844c505e4828989037b7e182a77b6ee731b94bb0c108cfcb0fc74d532b17320b

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