Malicious PDF — malware analysis report

Static analysis result for SHA-256 d997fa6b4e5f7599…

MALICIOUS

PDF

36.8 KB Created: 2020-07-25 03:49:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 91efdc3547d0607c311571f4a78c7f72 SHA-1: 720cf7eeca4054c774ae61816a238b8a8b39b960 SHA-256: d997fa6b4e5f7599e13d395b851ace471c6410173c84a348aa6630ab00fb2477
194 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/pify?keyword=attendance+management+program+zkteco+free'. Additionally, it exhibits characteristics of a PDF link farm, with numerous external links, including one to 'https://cdn.shopify.com/s/files/1/0431/8455/4135/files/zodisoduviwo.pdf'. The document body is heavily obfuscated and unreadable, suggesting it is not intended for direct user consumption but rather to host malicious links.

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=attendance+management+program+zkteco+free In PDF document text
    • http://files.autismbuddies.org/uploads/1/3/0/9/130969327/rebowujumux-dexufedat-medopivisa-bogom.pdfIn PDF document text
    • http://files.emotionallyfocussedeating.com/uploads/1/3/1/3/131381772/xaraxalujag_ledazowajoso.pdfIn PDF document text
    • http://files.ezvietnamese.com/uploads/1/3/2/6/132695434/6886625.pdfIn PDF document text
    • http://files.bryangatescfi.com/uploads/1/3/1/4/131406781/lujufi_tizefa_tidapu_sunazuzem.pdfIn PDF document text
    • http://files.zakiahgobok.com/uploads/1/3/2/7/132712508/0c44cc8f8fc.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/1/0431/8455/4135/files/zodisoduviwo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7744/3483/files/vapadigavazijedaposow.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7507/5225/files/gigiwome.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5987/9841/files/43701272189.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4949/2384/files/xixebirotubepa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1175/8491/files/moxuvijonepogerito.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7618/2426/files/mirunag.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8231/7975/files/loxokosazer.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2226/2178/files/sadivazifetifagosorot.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2973/3282/files/niforujubodefemagopoli.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5896/1320/files/45432801880.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6489/3344/files/guvivowuginigeguna.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_off00005663.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5663 5108 bytes
SHA-256: e1953bb29d671fdf1c6a66e0db7dc8561ff4173aac693c37551ab4d7c4515d3a
font_01_sfnt_off000067ac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x67AC 8824 bytes
SHA-256: ba60c68124d4191bf71d258dc1ebcf38b05e88fecd703a6a44b50c539b8218f0

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