Malicious PDF — malware analysis report

Static analysis result for SHA-256 fa9979cd340d8112…

MALICIOUS

PDF

36.7 KB Created: 2020-08-20 06:53:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 5335a7febe6287bb0f1454015b2ec738 SHA-1: 52b0fbc484846d6ed8ab87f604fd8910cb474f5f SHA-256: fa9979cd340d8112486ccdabd52aff53bb55cb9ab4c9b4a3cf3e57b73cc3f23b
194 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.com/pify?keyword=cell+membrane+structure+and+function+worksheet+answer'. This indicates the document is designed to redirect users to malicious infrastructure. Additionally, the PDF exhibits characteristics of a link farm, embedding numerous external links, many of which are hosted on Shopify. The document body, though heavily obfuscated, contains the same malicious URL, reinforcing the lure. No scripts were extracted from this sample.

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=cell+membrane+structure+and+function+worksheet+answer In PDF document text
    • http://files.monfortestatesdacula.com/uploads/1/3/2/6/132681002/226bb98.pdfIn PDF document text
    • http://files.asyouwishuk.com/uploads/1/3/1/4/131452878/rurivutagu_xupobusi_jizejepurewu.pdfIn PDF document text
    • http://files.exercisewithtracy.co.uk/uploads/1/3/0/7/130776712/b8e631de8.pdfIn PDF document text
    • http://files.ctknj.org/uploads/1/3/2/8/132815154/7764174.pdfIn PDF document text
    • http://rapupuv.renfestjeweler.com/uploads/1/3/1/0/131071252/546916c78d1.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/1/0428/3406/7615/files/qigong_breathing_exercises.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9409/7576/files/mac_os_high_sierra_hackintosh_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3699/0885/files/1549439511.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6360/6429/files/craigslist_ie_jobs.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7992/4902/files/astragalo_vertical.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1021/9422/files/assises_fiscales_maroc_2020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0071/6694/files/wiruzoxaroxalakejaxi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9961/1553/files/bodoni_bt_font.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 8

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_off0000503d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x503D 5460 bytes
SHA-256: 355b76578d0c9abd6f2a725bd01a14478869794f3015e1d2afe92ee85990dc63
font_01_sfnt_off000062a7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62A7 10288 bytes
SHA-256: ed9a3bea064709ad39a42c169e61e533f6f41f4f23bec93f26ffb7544aba430f

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