Malicious PDF — malware analysis report

Static analysis result for SHA-256 ca7300499f758792…

MALICIOUS

PDF

48.6 KB Created: 2020-08-02 19:01:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 73417fdb9d59458028910b5829cb132e SHA-1: 7a2326a4abd7e6e89751e82aea5eaa77f01b386d SHA-256: ca7300499f7587929b44b3374bf39e99b90ff2eef9865f89a799e17ec63e573a
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a significant number of embedded links, with one pointing to a known malicious redirector. The document body itself is heavily obfuscated and appears to contain a large list of URLs, many of which are hosted on Shopify and other domains, suggesting a link farm or SEO manipulation tactic. The primary intent appears to be directing users to malicious or deceptive content through these numerous links.

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=tf.+nn.+batch_normalization In PDF document text
    • http://files.complete-instructor-training.co.uk/uploads/1/3/1/3/131381078/vurulemoreje-vujifazoron.pdfIn PDF document text
    • http://files.aviewoflondon.com/uploads/1/3/2/6/132696598/625d6081.pdfIn PDF document text
    • http://files.ohleev.com/uploads/1/3/0/9/130969172/konununos.pdfIn PDF document text
    • http://files.sunnydawnpetgrooming.com/uploads/1/3/1/6/131637606/gazogefevuzen.pdfIn PDF document text
    • http://files.incrediblydelicious.com/uploads/1/3/0/9/130969974/tijepaxa_talegifilojawav_pixepitojis.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/1/0430/6488/5402/files/85771818216.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9199/3500/files/83968853356.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8544/7833/files/xezekuwilojolamaxapedarol.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9262/1978/files/17447685481.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6299/2795/files/kejaxafekujudap.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/6898/7294/files/vermont_dmv_express.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9963/5355/files/88205913355.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4678/8501/files/22330452740.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1329/9620/files/37754786114.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8076/9951/files/zamugipako.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3179/6632/files/21489978016.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4411/9462/files/81897936373.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1497/8718/files/73041094868.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1137/5267/files/47865212795.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006b5a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B5A 4816 bytes
SHA-256: 39fd4bdef5bbc80157c1617f81bc52d4858734a7eba464c40b41aa8fa2c0753b
font_01_sfnt_off00007b85.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7B85 13960 bytes
SHA-256: 4ebd0dc9b74c0a0c735f8ace618d7fed7f4090283903f799a890b4dd668bf57a
font_02_sfnt_off0000a727.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA727 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361