Malicious PDF — malware analysis report

Static analysis result for SHA-256 0c5483b6866f4c8e…

MALICIOUS

PDF

42.2 KB Created: 2020-08-24 22:53:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 31b97353043321e7475c35a7e420085d SHA-1: 5f9d3050079a6d7963c33a9e5570fccd9b0ddd39 SHA-256: 0c5483b6866f4c8eabff0066bc52fab066cb4cb8400aea6e8c38e6f471977c89
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, many of which point to a redirector service (ttraff.ru) that is flagged as malicious. The document body, though heavily obfuscated, contains text suggesting it is part of an SEO link farm designed to mimic search results, specifically for "Analytical balance mettler toledo pdf". This indicates a likely phishing or spam campaign aiming to drive traffic to malicious infrastructure.

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=analytical+balance+mettler+toledo+pdf In PDF document text
    • http://bolij.rosariumsouthafrica.com/uploads/1/3/2/6/132695887/xupop.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/1/0434/1229/1751/files/brushed_cotton_fitted_sheets_super_king_size.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0713/0270/files/length_of_string_in_c.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0273/9362/files/metipovowa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2538/2051/files/sopuvuxegow.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/5120/3225/files/bourbaki_integration.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1559/4393/files/42197199352.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6769/3474/files/alexander_mcqueen_book.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8794/6133/files/xikuluzepime.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5782/3390/files/bvi_company_formations_limited.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0448/3593/0273/files/nawubixalajoxodaxigezatu.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_off000063bb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63BB 5356 bytes
SHA-256: e94f34006ff921d9af75fb236140d5f71ffda74f1c62619f89e89bf744ad7253
font_01_sfnt_off000075d2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x75D2 11604 bytes
SHA-256: beefb8893322882234a003574119fc23232f39dc28f4b4a30776ed35ea725dfe

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