Malicious PDF — malware analysis report

Static analysis result for SHA-256 5bdd790ca8d68d6b…

MALICIOUS

PDF

46.9 KB Created: 2020-08-08 23:47:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 6f915fd7d86cbbfb5cb23d774455b78c SHA-1: 53ab83152ef25c5990ebc2d1a0d903740f3be398 SHA-256: 5bdd790ca8d68d6b6d70f2a31354afc4fd2d80af72e4d111a1329f0df7b2bc78
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains multiple embedded links, including one pointing to a known malicious redirector infrastructure at 'https://ttraff.cc/pify?keyword=html+to+pdf+library+c%2523'. The document body and heuristics suggest a lure related to 'html to pdf library c#', likely intended to trick users into visiting malicious sites or downloading further malware. The presence of numerous Shopify links, some benign and some unknown, indicates a link farm strategy.

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=html+to+pdf+library+c%2523 In PDF document text
    • http://files.katiedunivan.com/uploads/1/3/2/7/132741241/xugilirujazu_fatuvebizonosi_rikekijivokibof_zavonemewuvugu.pdfIn PDF document text
    • http://files.melanieboudreau.com/uploads/1/3/0/7/130739309/a429cd17.pdfIn PDF document text
    • http://files.strictlyskillsbasketball.com/uploads/1/3/1/6/131636764/4217464.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/1/0437/6756/2391/files/95616851883.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8926/4794/files/ziwavemu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9890/6528/files/juwogebiwo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0166/6969/files/26021314236.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/9769/9992/files/tefef.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9276/2017/files/luxisuwawox.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2421/9288/files/35867585678.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/3782/4926/files/bcom_1st_year_books.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/16481260084.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4262/6984/files/vobijuvupakafekeforuf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0925/3286/files/pigas.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5829/1093/files/ritelebijaluximesus.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8450/4474/files/nusoxujifaxudub.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 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_off00007966.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7966 5328 bytes
SHA-256: 5b2d18568215544d24522238c350d83a2ee3e5ab20ee3b1415e8334a974be722
font_01_sfnt_off00008b71.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8B71 10420 bytes
SHA-256: 0b0681ded68e1b7d6aa6888e6a660cc7f863b877c882bc57d198d2640d131a3c

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