Malicious PDF — malware analysis report

Static analysis result for SHA-256 3ec1ffce6915d197…

MALICIOUS

PDF

45.6 KB Created: 2020-08-19 02:43:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 2785e09740e811f37337ea3b45e7d6ca SHA-1: 7246a06e96966a30dc7a17e5644f25efd9680bcb SHA-256: 3ec1ffce6915d1979ced9d8ae87b5286877d06d45c28a2592cfd50dae536d0d9
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a malicious redirector link disguised as educational content. The ML classifier strongly indicates maliciousness. The primary malicious URL is ttraff.ru, which is known for redirecting to malicious sites. The document body, though heavily obfuscated, contains this URL and other links that appear to be part of a link farm designed to improve search engine ranking for malicious content.

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=quantitative+aptitude+questions+and+answers+on+average In PDF document text
    • http://pazobafa.snowstorm-artstudio.com/uploads/1/3/0/7/130776553/6709767.pdfIn PDF document text
    • http://files.magazinebrighton.com/uploads/1/3/1/1/131164081/7cdf75512.pdfIn PDF document text
    • http://files.bryanbotterill.com/uploads/1/3/1/8/131858592/lukefixofotinezago.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/1/0436/9262/1978/files/81269505481.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0993/2440/files/crosley_record_player_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3459/1907/files/59899104357.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/5607/4645/files/244_guidelines_engineering_lettering.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5326/0700/files/altivar_312_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0454/3338/9214/files/bhagavad_gita_in_english.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4877/2508/files/adobe_reader_download_latest_version.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7003/7924/files/sagof.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5657/8212/files/amc_lennox_town_center_24_columbus_oh.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2063/9646/files/xegozazujafalanufesaj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1684/5469/files/74557913059.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 6

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_off0000688a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x688A 5432 bytes
SHA-256: 8fe6910778a61d3aba2677f275f185c2b08b00397a9008b00df02dca151014c9
font_01_sfnt_off00007b1e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7B1E 14628 bytes
SHA-256: 1153ba9f87693776ca4afe0f2d2d2a01794fb0be5a75b2b60ee92ff409377e1c

Open this report in the interactive analyzer, or submit your own file for analysis.