Malicious PDF — malware analysis report

Static analysis result for SHA-256 a450b6179b44f26e…

MALICIOUS

PDF

39.7 KB Created: 2020-08-17 14:17:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: ca7a4d89c7b5517a0ac1071401472c63 SHA-1: e8e931bc6d9af9f27c82983afda6c8792fda5f41 SHA-256: a450b6179b44f26e8c4443cf0241a0e7444f99f2a5496c008d2438dd504c4679
194 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with a primary URL pointing to a known malicious redirector. The document body, though heavily obfuscated, contains text related to 'Business report writing format' and the malicious URL itself, suggesting a lure. The ML classifier strongly indicated maliciousness. No scripts were extracted, but the PDF structure and embedded links are indicative of a phishing or redirection attempt.

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=business+report+writing+format In PDF document text
    • http://files.armakansas.org/uploads/1/3/1/4/131453843/magekadiripi_topiranoboxa_wifivosajibutob.pdfIn PDF document text
    • http://xopufo.mrshemlersclass.com/uploads/1/3/0/8/130814328/2251918.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/1/0427/7462/6470/files/52851489821.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9869/4049/files/sumamanujufanadawumifabi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9269/5456/files/lejovezefubiwejeko.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4125/1747/files/phn_mm_chuyn_i_file_nh_sang_min_ph.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3450/1535/files/zobes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9282/0643/files/ets_gre_book.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6662/9032/files/zaguridipixegugujonin.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6481/1935/files/62795266755.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8440/7199/files/delhi_metro_map_full_hd.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5148/2278/files/90306327586.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8760/9497/files/69289851596.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9117/3282/files/gobinorukolufugifita.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 3

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_off00005eb8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5EB8 5332 bytes
SHA-256: 5fa7d831df816f09efa221265661cb9e9a449a1a0f61df66753644a0d56ade54
font_01_sfnt_off000070d3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x70D3 9772 bytes
SHA-256: 2af798b84c84aa7d4c4ddc8c15153322dd8970622f5d1d7c647b45b95dbbc795

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