Malicious PDF — malware analysis report

Static analysis result for SHA-256 83495e98fa4df8f2…

MALICIOUS

PDF

42.8 KB Created: 2020-08-14 22:40:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 7acd06158d32614bb24d46c2104dc063 SHA-1: caae3806b3d092a4897fb64586081a4c44db6f3c SHA-256: 83495e98fa4df8f2488e75be9f9a89e34bc846d4539a92c76ac5e7011a67dab6
194 Risk Score

Malware Insights

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

The PDF contains numerous links to redirector infrastructure, specifically identified as a malicious redirector. The document body, though heavily obfuscated, contains a URL that matches the identified malicious redirector, suggesting a phishing or scam attempt. The ML classifier also strongly indicated maliciousness.

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=best+spreadsheet+app+for+ipad+mini In PDF document text
    • http://files.worldpairsangling.com/uploads/1/3/1/3/131379894/7626143.pdfIn PDF document text
    • http://files.volcano-blog.com/uploads/1/3/0/9/130969310/talipuri-nagesol.pdfIn PDF document text
    • http://kumejap.sitstay.ca/uploads/1/3/0/9/130969754/noviv_lerifiwomunil_pubodunet.pdfIn PDF document text
    • http://files.marcusajohnson.com/uploads/1/3/1/3/131381681/razolorapol-mimufizaz.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/1/0428/4874/7676/files/88876271025.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/56751463133.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0240/4769/files/94159396509.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/89377355024.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8787/8549/files/kekatadurik.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1737/1797/files/cracking_the_money_code_trading.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5668/5468/files/bobujafi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4272/5275/files/schizophrenia_journal_articles.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8113/8343/files/93474519668.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2480/9116/files/binary_options_candlestick_patterns.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7522/3206/files/no_man_s_sky_korvax.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4324/9563/files/72280849391.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/xugifewelogukepebokiz.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 7

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_off000068d9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x68D9 5300 bytes
SHA-256: 4e35e1ab85426b9219b78c315bae41cdb6063e8515afffd5b4a55372f7862463
font_01_sfnt_off00007ab9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7AB9 10268 bytes
SHA-256: e91cd127bc2589d0475c8e0d946c051a641824f42378ea0c6c46e7a79b955d75

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