Malicious PDF — malware analysis report

Static analysis result for SHA-256 18d60b7ec9dbc68c…

MALICIOUS

PDF

45.3 KB Created: 2020-08-11 14:06:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: eccaec396f422793a50ba510a9ccbc40 SHA-1: 0e0a18c95e72b886d400230591f1cde5f098721d SHA-256: 18d60b7ec9dbc68c077e31c1667a645227dc8ae12c67c845ede0794863774cb9
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, many pointing to redirector infrastructure like 'ttraff.ru', which is flagged as malicious. The document body and embedded links suggest a tactic of creating a link farm to drive traffic to potentially malicious sites, possibly for phishing or malware delivery. While no scripts were directly extracted, the PDF structure and embedded links are indicative of malicious intent.

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=alcohol+phenol+and+ether+questions+pdf In PDF document text
    • http://jawidubax.drcots.com/uploads/1/3/2/7/132740405/2342714.pdfIn PDF document text
    • http://files.mandylevin.com/uploads/1/3/1/3/131398008/befeleriv.pdfIn PDF document text
    • http://files.theoldguardofprinceton.org/uploads/1/3/1/3/131380666/gajesitosonekat-babadavifotiwiz.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/1/0428/5480/9759/files/2002_mitsubishi_lancer_commercial.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9058/3458/files/scatter_plot_python.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8170/3319/files/2466569715.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6067/4198/files/mozupinovilax.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0278/1083/files/ketitakibepexolewi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2568/6951/files/49806011096.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1692/0996/files/arguing_about_literature_2nd_edition_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4351/1706/files/suzox.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6090/4604/files/danexopu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0452/5775/2733/files/arterial_blood_gas_analysis_an_easy_learning_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6759/6184/files/20890848926.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 6

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_off00006c02.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C02 5360 bytes
SHA-256: f00379f25e86cb164bed842ca3634fcbb93d7177638b71f977988bca8a58a730
font_01_sfnt_off00007e24.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7E24 13260 bytes
SHA-256: 68dcd89d30f050bcbbf598e61441005b08ecf85b7036a3251e39431778f42b54

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