Malicious PDF — malware analysis report

Static analysis result for SHA-256 41599f77cad2156d…

MALICIOUS

PDF

44.9 KB Created: 2020-08-07 09:35:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b66f91a913ba7f0551d2f1d8e6a3d0c0 SHA-1: 93a33af45df2572804521978148f1ede2afb48b0 SHA-256: 41599f77cad2156dd307670d61ece49a65f6f3a4d29f817a7839453688e3b313
194 Risk Score

Malware Insights

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

The PDF was flagged as malicious due to a critical heuristic identifying a link to a known malicious redirector at ttraff.com. Additionally, the PDF contains a large number of external links, many hosted on Shopify, which is characteristic of SEO link farms used to manipulate search results. The ML classifier also strongly indicated maliciousness. The embedded document body, though heavily obfuscated, contains the URL that triggered the malicious redirector heuristic.

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=vitamin+a+untuk+mata+pdf In PDF document text
    • http://files.everexpandinglife.com/uploads/1/3/1/3/131384567/c0e23b09e617.pdfIn PDF document text
    • http://files.chaikalevar4greenertoronto.ca/uploads/1/3/1/1/131164009/0edeba.pdfIn PDF document text
    • http://files.portstanleyartguild.com/uploads/1/3/1/0/131071035/ligufepebi.pdfIn PDF document text
    • http://files.lansdownefarm.com.au/uploads/1/3/1/0/131070912/gasegaloferepafexez.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/1/0434/0894/9402/files/ronebugiwato.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8238/2502/files/57066786233.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8100/7255/files/functional_specification_document.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5547/1006/files/adjectives_words_list.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5689/7947/files/37874797692.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0323/8811/files/wuruzorozizud.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8451/3429/files/60848614759.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/6172/1765/files/30324392446.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6577/0135/files/fagovupifuvabupod.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4434/7799/files/vugimudodepexilijatumepap.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_off00005ebb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5EBB 4564 bytes
SHA-256: b9958b58a05a5fc9873554543d8f9560c0d63645d4b0f6a3b658238bb4d1522c
font_01_sfnt_off00006e25.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E25 13532 bytes
SHA-256: eecfb50e326d3f10b6698e2762ed815bdf852c039fa542c9748d679b8c90bbc8
font_02_sfnt_off000098e8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x98E8 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333

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