Malicious PDF — malware analysis report

Static analysis result for SHA-256 b4dfd3305cb86747…

MALICIOUS

PDF

46.9 KB Created: 2020-08-03 21:18:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 4bbde5bb1779608697d1c833f46e47ce SHA-1: af22e80b84e563f9a1f3cb5c077b8d1a5f39c7e7 SHA-256: b4dfd3305cb867478ff4f7d542de7968d8e428e06782bfa58f7bf854447fb980
202 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.com, which is disguised as a document about quantitative aptitude questions. The PDF also exhibits characteristics of a link farm, with numerous embedded links to other PDFs, many hosted on Shopify. The presence of a visual download button further supports a lure-based attack. The primary intent appears to be directing users to malicious infrastructure via the ttraff.com URL.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=quantitative+aptitude+simplification+questions+pdf In PDF document text
    • http://woxifeje.novelslices.com/uploads/1/3/1/4/131453323/wenopuzebenoj.pdfIn PDF document text
    • http://files.amandaackleydesign.com/uploads/1/3/1/8/131856333/tasis.pdfIn PDF document text
    • http://files.kaitcalabro.com/uploads/1/3/2/7/132712235/3718701.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/1/0429/6258/3711/files/jalobo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1932/7896/files/rizixerefexaribi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7727/1716/files/bufilapawekopebe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8300/5093/files/tonibisovorozinogugoj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4848/4507/files/90039458158.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3772/0733/files/campbell_hausfeld_airless_paint_sprayer_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8748/7395/files/29672768575.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/jisabisagubimebusogapasof.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/5752/1574/files/fizifanada.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4839/4143/files/2138930924.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7511/6959/files/99502649726.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4727/3116/files/tavosinisipuxavuxapotota.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 4

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_off000069bc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x69BC 5452 bytes
SHA-256: 739d0b3dc93b93d028020f4edc70a776cc6639b04ba7dc57b1ecf060381ec863
font_01_sfnt_off00007c3e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7C3E 15472 bytes
SHA-256: 35c52db9d3f50a38da293c75471c86d4333ef4bcf0bd841a54814083688e490e

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