Malicious PDF — malware analysis report

Static analysis result for SHA-256 1119a1f2fd8a8aa3…

MALICIOUS

PDF

36.5 KB Created: 2020-08-26 01:02:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 894e6ca01f186758a8a60a0c5779c983 SHA-1: 104aa9824e3dbc8f3cc729781d514b0cdf04ee84 SHA-256: 1119a1f2fd8a8aa3f67b6aa889c9cc1f6f8a26ca126fb6bda89cadfabe452355
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'. This suggests a phishing or malware distribution campaign, likely using a lure related to 'wavread matlab 2016'. The ML classifier strongly indicated maliciousness, and the presence of multiple external links points towards an attempt to drive traffic to malicious sites. No scripts were extracted, but the embedded links are the primary indicators 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=wavread+matlab+2016 In PDF document text
    • http://gagazol.renoirpropertygroup.com/uploads/1/3/1/0/131070306/c6086e65562d6.pdfIn PDF document text
    • http://xasimas.azusaconservatory.org/uploads/1/3/0/8/130874591/vasovipowe-jomupituvugomo-topalu.pdfIn PDF document text
    • http://files.broncohack.net/uploads/1/3/1/3/131398242/vodaliva_zodozatonikos.pdfIn PDF document text
    • http://files.stalbansepiscopalhouston.org/uploads/1/3/2/7/132740756/2214274.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/1/0429/1916/6105/files/3734040922.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9019/8180/files/4540922987.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9542/5191/files/18295359749.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7399/3890/files/suwimabuvosata.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3482/9222/files/68905990966.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7768/7701/files/html_phone_book_template.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0460/3799/1583/files/bachon_ki_poem_full_hd_video.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7055/3238/files/91882822237.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8716/7641/files/pupolo.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
font_00_sfnt_off00004fca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4FCA 5484 bytes
SHA-256: 16eae134db9c71587d8ca418772f6cc22270bfa5531aa826644ca4d8379dd387
font_01_sfnt_off0000626d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x626D 10456 bytes
SHA-256: d43618c811f7c02a7b0531035a0c505bdd24a2c0ef971172d15da0a168a07d63

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