Malicious PDF — malware analysis report

Static analysis result for SHA-256 760fb8a9f0f9c9f0…

MALICIOUS

PDF

57.6 KB Created: 2020-08-19 03:55:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 2f6e839385dd2518a099418072142337 SHA-1: f59a5420465a1ed9ce5677d34f587583847161de SHA-256: 760fb8a9f0f9c9f09041639d3dbb8cce6a7daef8ae6e99a9a17881c8f37eb4b9
194 Risk Score

Malware Insights

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

The PDF contains embedded links pointing to a known malicious redirector, ttraff.ru, which is also flagged by heuristics as a malicious redirector and part of an SEO link farm. The document body, though heavily obfuscated, contains the URL that is also present in the heuristics and IOCs. The ML classifier strongly indicates maliciousness. The presence of embedded URLs and the redirector infrastructure suggest an attempt to lead the user to a malicious site, likely for phishing or to download further malware.

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=paradesi+babu+odia+song In PDF document text
    • http://files.luskccmaths.com/uploads/1/3/1/8/131856543/456821.pdfIn PDF document text
    • http://files.ttautothunderbay.com/uploads/1/3/2/7/132740214/fixitiwesa.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/1/0428/5048/4390/files/nuxidavepe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1350/3133/files/jaxuzuxisegi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4638/7362/files/zovotuwiwesaxokota.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8346/3832/files/5815692297.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0595/9574/files/4064852006.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2117/2897/files/xuwifilajuw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5769/3347/files/florida_boaters_license_exam_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4638/7362/files/power_electronics_hart.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1458/6521/files/zelifu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8558/4797/files/digital_signal_processing_mitra_3rd_edition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0443/1344/4508/files/51879887822.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 7

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_off00009b4f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9B4F 5104 bytes
SHA-256: 84528216e60fac193a773e3a0595b1ae0273a5a4918af0cf10853426405196ac
font_01_sfnt_off0000aca9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xACA9 14556 bytes
SHA-256: 52e1bff48154b1d3241891d4d4b55b1b7e84d93d7df889bd18b886f9008e3cab

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