Malicious PDF — malware analysis report

Static analysis result for SHA-256 5cb97dc9838b61c5…

MALICIOUS

PDF

42.1 KB Created: 2020-08-04 20:12:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 36d8445f0adfc2f5b087ae0c4ba98a8b SHA-1: b6ff0fd23845f3e97189b22a8a68d83ae0935de5 SHA-256: 5cb97dc9838b61c5283c0a5052327db3c3491b2ab6634f7b0394fd47f89c87c4
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file contains a link farm and redirects users to malicious infrastructure, specifically identified by the 'ttraff.cc' redirector. The document body, though obfuscated, contains references to the redirector URL and other benign-looking PDF links, suggesting a social engineering tactic to trick users into clicking the malicious link. The ML classifier strongly supports the malicious verdict.

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=behringer+x32+compact+tutorial+pdf In PDF document text
    • http://files.toolbox2teach.com/uploads/1/3/0/9/130969404/5750257.pdfIn PDF document text
    • http://files.kazmetixartistry.com/uploads/1/3/0/8/130873855/8560475.pdfIn PDF document text
    • http://files.affordabletowingnearme.com/uploads/1/3/1/3/131383297/pazijinageganoz_lerotudajoginoz_suxevoxiw.pdfIn PDF document text
    • http://files.artgalleryofsnovalley.com/uploads/1/3/2/7/132740692/5372745.pdfIn PDF document text
    • http://files.mahomdub.com/uploads/1/3/2/7/132740778/lasin.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/1/0437/7794/9848/files/ecologia_e_gesto_ambiental.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1103/7589/files/12318886635.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0450/9509/2376/files/formwork_for_concrete_7th_edition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0263/4148/files/vemativalufasig.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/6453/8776/files/easy_money_movie.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0448/4068/1633/files/binary_search_tree_c_code.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0450/6664/9750/files/angiotensin_ii_for_the_treatment_of_vasodilatory_shock.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/5841/1158/files/56135748443.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0683/5358/files/contemporary_abstract_algebra.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8275/2935/files/visual_studio_2010_shell.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9010/8833/files/wototosurenaj.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_off00005a22.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5A22 5804 bytes
SHA-256: 7fe059ab5068516339d24c0c6dcb08ed5d45264db86bccaca5153b9b67e20c7b
font_01_sfnt_off00006dc7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6DC7 14672 bytes
SHA-256: 01f63fab13299cbc4fffe639c440a645e5a12db001c43a7fa417d7c0f71960fa

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