Malicious PDF — malware analysis report

Static analysis result for SHA-256 a615594dd43d8d8d…

MALICIOUS

PDF

47.5 KB Created: 2020-08-10 23:18:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: 9ab4bd7bd28dbfc3e023809b1a722d32 SHA-1: 5a2e6c97cd60eb880282df6270009434683c1771 SHA-256: a615594dd43d8d8ddf6be19fa4dbe64f37596cfc59fdb5f4b8e2af61e641892f
194 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with a primary malicious redirector URL identified as https://ttraff.com/pify?keyword=pathway+bronkopneumonia+pdf. This suggests a phishing or scam attempt using SEO poisoning tactics to drive traffic to malicious infrastructure. No scripts were extracted, but the presence of numerous links and the ML classification strongly indicate malicious intent.

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=pathway+bronkopneumonia+pdf In PDF document text
    • http://files.zetachapterdkg.com/uploads/1/3/0/9/130969097/nozefamizarerapuwe.pdfIn PDF document text
    • http://files.hopeinelgin.com/uploads/1/3/2/6/132681969/3745741.pdfIn PDF document text
    • http://files.fjhcoinsandstuff.com/uploads/1/3/1/4/131483254/1c39ac1b5a.pdfIn PDF document text
    • http://files.csd4tech.com/uploads/1/3/0/7/130739116/koxekase_konevoja_xorokesefoned.pdfIn PDF document text
    • http://files.uwwatersheddynamics.com/uploads/1/3/1/8/131859042/gabupex-kowot.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/1/0439/1780/3675/files/76779502355.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0255/9655/files/65113166318.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6197/8023/files/read_incest_comics.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1141/5965/files/kimuzelavopibubisej.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0432/0154/files/icy_tower_on_line.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0426/4601/files/tapipebutewides.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8911/6836/files/lawifuxumapilasipef.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2315/5878/files/playboy_mansion_game.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5285/0586/files/adobe_reader_for_android_2._3_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1678/8900/files/27688907943.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3181/2504/files/54371020076.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2520/2325/files/adventures_of_sherlock_holmes_book.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8393/2582/files/sezobozomokikipel.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_off00007c21.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7C21 5468 bytes
SHA-256: ce96c03dfa3d0d25f05302ba42400321a326e6b3cc52f46b13c0aa4c71582785
font_01_sfnt_off00008ea0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8EA0 9920 bytes
SHA-256: 36d51addd88e77e8bcd90da18e8bb5bcb2b50f5350dc44ef7cb53f036433956a

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