Malicious PDF — malware analysis report

Static analysis result for SHA-256 055836c376660144…

MALICIOUS

PDF

46.2 KB Created: 2020-08-04 18:40:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 09826b98dd429fc3eb6bd4d5a5d475b4 SHA-1: 5a16ca470cd92e2e6fdc2e0fd2f4b4f46976b803 SHA-256: 055836c3766601447c276ee34b7ae7e5d618b56f74af3fd673a79a294a153b5a
194 Risk Score

Malware Insights

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

This PDF document contains multiple embedded links designed to redirect users to a link farm, masquerading as a medical treatment guide. The primary redirector URL is identified as malicious. The document's structure and the presence of numerous external links suggest an attempt to manipulate search engine rankings or distribute malicious content through a deceptive lure.

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/wb?keyword=hepatit%20b%20tedavisi%202018%20pdf In PDF document text
    • http://files.speedcubereview.com/uploads/1/3/1/3/131379737/3533723.pdfIn PDF document text
    • http://files.thefilamentstudio.com/uploads/1/3/1/6/131606035/fakesijerisaz.pdfIn PDF document text
    • http://files.mindyourbodyfitnessandnutrition.com/uploads/1/3/0/7/130740298/4755157.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8863/2213/files/85829592471.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0239/5813/files/paint_jobs_on_1963_chevy_pickups.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7767/1843/files/naliwuduketisopupejo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5317/9289/files/26377289788.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8553/7175/files/70512779973.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/nefodegaxinavikiva.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8292/3676/files/68801577260.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3237/0584/files/36309430587.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7981/1750/files/19609406275.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9776/0668/files/43817405714.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8990/3264/files/kivilabitonet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/82505274200.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2990/5058/files/basobataruv.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000066ef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x66EF 5160 bytes
SHA-256: 74d8d5ef3b8dda1ffcd5b2e545644203f35fd39c3bb5e2b53b4f5d292d375a87
font_01_sfnt_off00007886.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7886 11456 bytes
SHA-256: 2b66f149b9d14d5239bd15642a0f303c766ec63b8db76ce17f5313cde53232f0
font_02_sfnt_off00009c31.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9C31 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361

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