Malicious PDF — malware analysis report

Static analysis result for SHA-256 aa3663e34d8ecda8…

MALICIOUS

PDF

43.8 KB Created: 2020-08-06 12:39:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 8f58b5c0300398e177f0ee74f300a34b SHA-1: 3b56e4c772879edf4c3dbbd99cb05047cd096856 SHA-256: aa3663e34d8ecda85de73902df43d16d386a7b26265eee4e4c6397887229966c
194 Risk Score

Malware Insights

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

The PDF file contains a mass external link farm, with many links pointing to Shopify domains and one critical link to a known malicious redirector at ttraff.com. The document body, though heavily obfuscated, contains the URL 'https://ttraff.com/pify?keyword=ib+hl+biology+book+pdf', suggesting a lure to download further content. The presence of numerous PDF links indicates an attempt to distribute content widely, likely for malicious purposes.

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.com/pify?keyword=ib+hl+biology+book+pdf In PDF document text
    • http://files.angelababby.com/uploads/1/3/1/1/131163723/xixexolotoxa-kupawijeju-konudeton-vexodapul.pdfIn PDF document text
    • http://files.pwcs3.com/uploads/1/3/1/4/131454620/tededekuxavufusa.pdfIn PDF document text
    • http://saxifinug.westmorelandks.com/uploads/1/3/2/6/132681556/perotexesawef.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/1/0435/1324/9946/files/bittersweet_symphony_chords.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6137/1290/files/6926204009.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0962/2687/files/63276104379.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2716/1507/files/ruzosiwuduwojet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/75609531209.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7966/3765/files/venezipaza.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/zobirunutopuwipigodilig.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1312/8867/files/xowinedumadikudove.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3519/6568/files/45542828074.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2681/6932/files/dark_knight_guide_ffxiv.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 3

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_off00006ef6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6EF6 5060 bytes
SHA-256: 580ca9e26142ef3b2fe3f5283909e11931114d252daacc509c3f243cd28058b7
font_01_sfnt_off0000803b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x803B 10160 bytes
SHA-256: 5a623ee360e74b2af6c9b369019c926e3ec0c26508e4190052e97ff9efd67727

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