Malicious PDF — malware analysis report

Static analysis result for SHA-256 50515db38ca05d65…

MALICIOUS

PDF

49.8 KB Created: 2020-08-17 00:10:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: fc0356f00d835795d7edff72d4d39045 SHA-1: b153153c9a45dc672cf7d6b2303f9875aea8e886 SHA-256: 50515db38ca05d6558a65a1dd88774641dc5e66fdeb9f8c19ac33e821187329a
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file was flagged by a critical heuristic for linking to known malicious redirector infrastructure. The ML classifier also strongly indicated maliciousness. The document body contains the malicious URL and numerous other URLs, many hosted on cdn.shopify.com, suggesting a link farm or redirection strategy. The primary malicious IOC is the ttraff.com URL, which is likely the initial step in a phishing or malware delivery chain.

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=vcds+12.+12++rus+%25D1%2581%25D0%25BA%25D0%25B0%25D1%2587%25D0%25B0%25D1%2582%25D1%258C In PDF document text
    • http://files.fhsguidance.com/uploads/1/3/1/6/131636907/3245438.pdfIn PDF document text
    • http://files.nyharbornature.com/uploads/1/3/1/4/131454373/adefa.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/1/0433/0687/7080/files/62386903812.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2952/6690/files/bitcoin_address_script._txt.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7997/5591/files/doki_doki_literature_club_poems.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1310/4028/files/ordering_numbers_worksheets.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/8056/2326/files/astaghfar_ki_fazilat_in_urdu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2669/4822/files/podewawuvikunonabazifir.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6640/1692/files/ornament_and_crime_essay.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5456/3477/files/dujikikeru.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9541/7237/files/5932003598.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0175/6323/files/zener_diode_as_voltage_regulator_notes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7812/3680/files/streptococcus_pneumoniae_tratamiento.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8330/0005/files/terrorismo_causas_y_consecuencias.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8618/3576/files/install_sdl_ubuntu.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_off00007324.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7324 5500 bytes
SHA-256: a259af5d19291ea131de8a8398c618c789eb13506a3bcfa9a3d402796aa2ba44
font_01_sfnt_off000085ae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x85AE 16276 bytes
SHA-256: 65583114d13020d71a4031869e165d24ebd2d9e2283e384e562d93f8ad5ad964

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