Malicious PDF — malware analysis report

Static analysis result for SHA-256 16cd7a3dd31d4732…

MALICIOUS

PDF

45.0 KB Created: 2020-08-23 11:40:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 059ba23c40b3894d35667e0e2d75c883 SHA-1: eeb81d1512dd31f1be6b58922b23294c36dcb75a SHA-256: 16cd7a3dd31d47323f4571a684b453345839110526c18fb57f43eae2b2deac2e
194 Risk Score

Malware Insights

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

The PDF contains embedded links that redirect to malicious infrastructure, specifically a URL designed for SEO spam and phishing. The document body, though heavily obfuscated, contains a URL that appears to be a lure for a game editor, suggesting a phishing or scam attempt. The ML classifier strongly indicated maliciousness, and the presence of multiple redirector links reinforces this assessment.

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=football+manager+touch+2019+android+editor In PDF document text
    • http://files.treeservicenaplesbonitamarco.com/uploads/1/3/0/9/130969211/vuvaderikovitas-wunujujosukoj.pdfIn PDF document text
    • http://tavavezo.dagninoiv.org/uploads/1/3/1/1/131164211/mifitewegamejem.pdfIn PDF document text
    • http://files.3dbikefit.com/uploads/1/3/0/7/130775174/rowez_sosidisosor_vawegipoguvifor_ludazekeforosiw.pdfIn PDF document text
    • http://xefopu.charlenemosley.com/uploads/1/3/1/4/131438044/naxililer_remepavukuvate_jimigojovuke.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/1/0430/9378/6791/files/21836158892.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7845/8275/files/bhagavad_gita_in_telugu_online.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5057/3724/files/paramedic_vs_emt_uniform.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9875/1641/files/roxepevavudazup.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1336/4121/files/96859768564.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9254/8515/files/sql_concatenate_strings.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5294/7863/files/jofakutoxobum.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0443/8904/0294/files/xadegonagexosuw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6422/0055/files/patozibowakogegizekipi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0449/2728/7451/files/banach_algebra.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4381/4560/files/32978474659.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_off00006eb9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6EB9 5752 bytes
SHA-256: 383112aed95bef121551bdfc7a0839a475df4e07a76c04d975ef0d0051dee62e
font_01_sfnt_off0000821d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x821D 10808 bytes
SHA-256: 84789ab4846da8d10e900548edd089e573ce75876a478eea4872b843721aeb89

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