Malicious PDF — malware analysis report

Static analysis result for SHA-256 d4384064c0d42ff1…

MALICIOUS

PDF

46.7 KB Created: 2020-08-01 01:13:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 64476c33eb8501804f728f9a234558a2 SHA-1: 4b2053dc5c9714c95a1744f2741033fe7a1bdf3b SHA-256: d4384064c0d42ff1f71c0a0399aa20d0f7a71e840de795c1f7353d726ae13c6f
194 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.ru/pify?keyword=skinny+love+ukulele+chords'. Additionally, it exhibits a PDF link farm pattern, embedding numerous external links, with the highest-priority one being to the aforementioned redirector. The document body, though heavily obfuscated, contains the same URL, reinforcing its role as a 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/pify?keyword=skinny+love+ukulele+chords In PDF document text
    • http://files.greendrakeoutdoors.com/uploads/1/3/1/3/131380786/95ebe0.pdfIn PDF document text
    • http://files.angelinekimkyna.com/uploads/1/3/1/8/131871835/8577438fbd038.pdfIn PDF document text
    • http://files.samanthasclassroom.com/uploads/1/3/1/4/131437123/1549893.pdfIn PDF document text
    • http://files.cervantesprimary.com.au/uploads/1/3/2/6/132680976/xonif.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/1/0435/5512/7459/files/xiruzegilufupewipam.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/5037/5070/files/rilijidosapapaxarexo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/69143450337.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9416/3109/files/11106063202.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1870/6341/files/90554498719.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2834/8056/files/jebubodovufo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/71340125447.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3227/9190/files/33874302139.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/0391/7974/files/pawaboratutepamud.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1293/2255/files/tuvujegibi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2834/9085/files/83517015172.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6901/4165/files/34494584606.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 4

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_off00006dd2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6DD2 5144 bytes
SHA-256: e11eca43b73738d29c888ae6987c8fc9811406733f4579a1b0cb0b7d5e129f23
font_01_sfnt_off00007f62.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7F62 14904 bytes
SHA-256: b25ca26f6ecebf4a608853a849ab029a6cebb790e54cea791126de20492d144a

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