Malicious PDF — malware analysis report

Static analysis result for SHA-256 4d54446dd7ddbbb7…

MALICIOUS

PDF

40.0 KB Created: 2020-08-12 04:17:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 046387d2a85664e2a934c4ea22af6e47 SHA-1: 5fc261da48a7dfeb6eb98ddab4ae7ab76f496593 SHA-256: 4d54446dd7ddbbb7aa575b377e2e296486752e30c6600e2c77d2e217d375e00c
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 'https://ttraff.cc/pify?keyword=cambridge+primary+english+activity+book+stage+4+pdf'. This indicates the document is designed to redirect users to malicious content. Additionally, the PDF exhibits characteristics of a link farm, embedding numerous external links, many of which point to Shopify domains, likely to manipulate search engine results or distribute further malicious content. The ML classifier also strongly flagged this PDF as malicious.

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.cc/pify?keyword=cambridge+primary+english+activity+book+stage+4+pdf In PDF document text
    • http://bigegufi.sno-puffsamoyeds.com/uploads/1/3/1/1/131164250/8ddf5e59f78.pdfIn PDF document text
    • http://files.kikoriapp.com/uploads/1/3/1/6/131606346/netiz.pdfIn PDF document text
    • http://files.eastmallinginstitutehall.co.uk/uploads/1/3/1/0/131070799/gakegutetakewubabo.pdfIn PDF document text
    • http://files.minitechmachinery.com/uploads/1/3/0/8/130813834/8456861.pdfIn PDF document text
    • http://files.lgeyecare.com/uploads/1/3/1/3/131379820/takivijagim.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/1/0431/1495/4908/files/71715866190.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6397/5835/files/gunopu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2391/7475/files/wejawafukufosarexenifadep.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0763/7661/files/puwida.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8548/7516/files/one_for_all_remote_codes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/sovaratumu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0781/1495/files/ms_to_seconds.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6148/4437/files/spektrum_dx6i_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9496/6436/files/pdf_to_word_converter_arabic_download.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 5

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004f21.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4F21 5836 bytes
SHA-256: f2253ffddf80dd2c85d3fe8110d551548d6c6b216492e7c35efffdf02929ad58
font_01_sfnt_off000062e4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62E4 9880 bytes
SHA-256: 188de7a5fa24a5b51b9c573de9fbd5b36483804cf804a3136ac20823216c4c41
font_02_sfnt_off0000849f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x849F 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f

Open this report in the interactive analyzer, or submit your own file for analysis.