Malicious PDF — malware analysis report

Static analysis result for SHA-256 522a45884d1a2e4b…

MALICIOUS

PDF

46.9 KB Created: 2020-08-05 07:54:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 6457e488ddc98e44180a90b976d85271 SHA-1: feef22a3826093696d1a52f8c57c5ffdaa6e1a29 SHA-256: 522a45884d1a2e4bab7899c2df752f64dfc790ef8d1e9a8b7579436d9be8e897
194 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, pointing to ttraff.com. The document body also contains the same URL, presented as a lure for an 'IELTS academic practice test pdf with answers'. This indicates a phishing attempt designed to redirect users to malicious content. The PDF also contains a large number of external links, many hosted on Shopify, which is flagged as a link farm.

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=ielts+academic+practice+test+pdf+with+answers In PDF document text
    • http://files.poolesvillepickers.com/uploads/1/3/1/6/131606289/fuminobixisetix.pdfIn PDF document text
    • http://files.clclife.com/uploads/1/3/1/4/131408620/ribepodaduwif.pdfIn PDF document text
    • http://files.strongerdaybyday.com/uploads/1/3/1/4/131483148/pujotogeg.pdfIn PDF document text
    • http://files.maizewallin.com/uploads/1/3/1/4/131407424/xizaj.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2567/7982/files/wamaxogovuwuzin.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8704/4510/files/21778949505.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2704/6301/files/tuberculous_lymphadenitis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4781/3269/files/nofozelirorazixenipev.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7386/2821/files/7023611569.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8995/2922/files/79304811535.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4071/8493/files/16784819266.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4433/8838/files/govos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6345/2583/files/zewegunotas.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/34993807018.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2380/9187/files/latisi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8496/2200/files/57183091878.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2750/4032/files/loxujas.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006c1e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C1E 5104 bytes
SHA-256: fda3c950ad62bde9aecbe0c41bbb355e9e15ae207bec4e1cb884b282138770f9
font_01_sfnt_off00007d52.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7D52 10180 bytes
SHA-256: a40b0102d55a29e703b5110610a2978e2ce4bcd50682c763e5018c23c8e313c8
font_02_sfnt_off00009fe2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9FE2 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3