Malicious PDF — malware analysis report

Static analysis result for SHA-256 4e7df4f3631a3236…

MALICIOUS

PDF

36.2 KB Created: 2020-08-07 01:02:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: c4fcecc7db02697321b3e03bfcf42a33 SHA-1: 8e6321fcaaf37e4d09e5b8ac80f83a724e18d48c SHA-256: 4e7df4f3631a3236a5abce010eafe6bba2fad80df932decf8f3e3edc29c61ccc
192 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Phishing: Spearphishing Attachment T1059.001 Command and Scripting Interpreter: PowerShell

The PDF contains a large number of embedded links, many of which point to benign content on Shopify, but one critical link directs to a known malicious redirector. The document body, though heavily obfuscated, contains text related to 'ACCA F1 practice questions PDF' and the malicious URL, suggesting a phishing lure. The presence of numerous external links, including the malicious one, indicates a link farm strategy to potentially distribute malware or lead users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9982

Heuristics 4

  • 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.
  • 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.cc/pify?keyword=acca+f1+practice+questions+pdf In PDF document text
    • http://files.dolibersclassroom.com/uploads/1/3/1/1/131164097/vafakeg.pdfIn PDF document text
    • http://files.cathermanslandscaping.com/uploads/1/3/1/4/131452741/kisapelilis_gavive.pdfIn PDF document text
    • http://files.thebookenigma.com/uploads/1/3/0/7/130776069/457191.pdfIn PDF document text
    • http://files.turkishinstructor.com/uploads/1/3/1/4/131453943/kofutewabafisega.pdfIn PDF document text
    • http://files.elefantsnowboarding.com/uploads/1/3/1/4/131407178/poramugogo.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/1/0435/5109/6984/files/aparato_circulatorio_anatomia.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1935/2739/files/cae_exam_vocabulary.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9297/4499/files/subedus.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6779/3817/files/93152885008.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0436/2906/files/zastone_d9000_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7196/3296/files/27695510873.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0273/2448/files/john_deere_lx188_owners_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0910/6343/files/72922513745.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0972/6888/files/77001786924.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/90296180399.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4848/5535/files/60271872096.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7256/0033/files/solidworks_surface_modeling_tutorial.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2880/6808/files/bujimori.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/2917/2122/files/pdf_to_word_converter_online_full_document.pdfIn 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_off00005408.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5408 5284 bytes
SHA-256: 77f5e67e1fb58cb779531f9b6f99f233285d61de104923083d9f6eaeb91a334a
font_01_sfnt_off0000661a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x661A 11548 bytes
SHA-256: 536b0a7fa3735e5d3f4ebf30113ae28c34ff295438ddb0976d75eedc231acf0c

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