Malicious PDF — malware analysis report

Static analysis result for SHA-256 16300308daefa547…

MALICIOUS

PDF

42.7 KB Created: 2020-08-23 02:54:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 39cd30358062cb0ee72cf626f2deca45 SHA-1: 531d112e4cb9bf84b14808e32501878477c3ff59 SHA-256: 16300308daefa5479b1ac1ea82766bae7e8626d0ee5c55b175cf3397565ad1c2
194 Risk Score

Malware Insights

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

The PDF contains multiple embedded links that redirect to malicious infrastructure, specifically identified by the 'PDF_MALICIOUS_REDIRECTOR_LINK' and 'PDF_SEO_LINK_FARM' heuristics. The primary redirector URL is 'https://ttraff.com/pify?keyword=org.+bouncycastle.+bcpg+jar'. This indicates a phishing or scam attempt designed to lead users to harmful content. No scripts were extracted, but the document body and link structure strongly suggest a 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=org.+bouncycastle.+bcpg+jar In PDF document text
    • http://files.hburghda.com/uploads/1/3/2/8/132814476/5eeeb261.pdfIn PDF document text
    • http://files.diylabourpain.co.uk/uploads/1/3/2/8/132814073/191379c8028ce.pdfIn PDF document text
    • http://files.kateschroederlpc.com/uploads/1/3/2/6/132695805/susitineniwufawedavi.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/1/0432/7571/4715/files/77886520693.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3059/3192/files/6507352603.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0465/0395/2542/files/best_free_automatic_call_recorder_for_android.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1442/2677/files/vozifolezomugu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8904/4383/files/jawijuw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4610/9345/files/kemonarapebowenisi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6467/1909/files/facebook_page_template.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6532/7262/files/seditetulumikifu.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 6

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_off00005d70.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D70 5476 bytes
SHA-256: 4c56c48980966af5e88183b5409c4f08f9aea1d91ac3eb80bca1ce8417d7b3e1
font_01_sfnt_off00007029.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7029 14940 bytes
SHA-256: 368ae3e0bdb969bae94460b7d93f5ae08f1a1ce5413228fdf78d12c592f39d34

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