Malicious PDF — malware analysis report

Static analysis result for SHA-256 25d80f406817ed4e…

MALICIOUS

PDF

33.8 KB Created: 2020-08-15 20:16:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d291db81d02b3d528c539fffae0be9fa SHA-1: 5b8b66ca3d90135fd2859f043f459390f6f29f74 SHA-256: 25d80f406817ed4e3c2b1b243a5d28e9faf9613f0a8a8ccde80fd7169d356d90
194 Risk Score

Malware Insights

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

This PDF document contains a large number of embedded links, many pointing to Shopify domains, but one critical link to 'ttraff.ru' is identified as a malicious redirector. The document body, though heavily obfuscated, contains the same malicious URL. This suggests the primary intent is to redirect the user to a malicious site, likely for further exploitation or phishing. No scripts were extracted, and the document body's content is minimal beyond the embedded URLs.

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=importance%20of%20set%20induction%20pdf In PDF document text
    • http://files.writeyourfirststory.com/uploads/1/3/2/8/132814900/3419155.pdfIn PDF document text
    • http://files.musicmakersplymouth.com/uploads/1/3/1/4/131437378/05ec8d483a9f5be.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/1/0431/9258/2293/files/7633192682.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7473/1685/files/nopozovuka.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4987/6641/files/early_termination_fee_verizon.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8904/3358/files/vojogidasedunoforijujopix.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3304/2839/files/dupaxe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/7469/6856/files/bjt_biasing.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8244/1113/files/bunaporigewanokikotuj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2240/1192/files/12171903139.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2806/2109/files/gilezetizizase.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/5834/0774/files/nolemegimikonubefakag.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2990/5058/files/algebra_tests.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3706/3328/files/liditefazibuxasoru.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 1

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_off000048e8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x48E8 5208 bytes
SHA-256: b854d2b8f31f81ad743f71c5b80321e638465b3c3411b98167d948a535c1364c
font_01_sfnt_off00005a71.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5A71 9436 bytes
SHA-256: 9552d2fa892e8b3338206ad95069948d6db974998113ff67b9037b1fe5e01efa

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