Malicious PDF — malware analysis report

Static analysis result for SHA-256 9cc19854a87e4ecd…

MALICIOUS

PDF

47.1 KB Created: 2020-08-20 05:51:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 53d1d7df99088e6d9a3cadc656b4dd3b SHA-1: 4f74d81b6d9f852097940b9cebcb97d6cfdd85a3 SHA-256: 9cc19854a87e4ecd04e8612e2c7de941f9f056be9d2e94a6b6a0b2f084ab96fa
194 Risk Score

Malware Insights

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

The PDF document contains a lure related to a "dissertation structure guide" and embeds a large number of links. One of these links, https://ttraff.com/pify?keyword=dissertation+structure+guide, points to a known malicious redirector. The document also contains numerous links to external PDFs hosted on various domains, suggesting a link farm or redirection strategy. No scripts were extracted from this sample.

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=dissertation+structure+guide In PDF document text
    • http://files.strathmoreapts.com/uploads/1/3/0/8/130815026/zawijofirazel-pikizerizixok.pdfIn PDF document text
    • http://sobitipo.knockatallonns.com/uploads/1/3/1/3/131384260/1e36ea7b828.pdfIn PDF document text
    • http://files.fkumc.net/uploads/1/3/1/1/131164312/gorifijekezewojum.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6146/0644/files/modded_cookie_clicker_save.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5868/2273/files/89759352524.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1796/0600/files/7246100896.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6214/0826/files/20940737202.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4831/2736/files/78004837365.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6857/1294/files/rigidez_articular_definicion.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3593/5388/files/migoxanegetotar.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2451/5229/files/arithmetic_mathematics.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0346/0259/files/33661553479.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 2

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006dc4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6DC4 4956 bytes
SHA-256: 527fdb434cdc375fc2571a6c515a46437230f0d21b222c1820052095648eed46
font_01_sfnt_off00007ea4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7EA4 10240 bytes
SHA-256: f4fded649f9dee4f9b9bd69a4d24ca124409dc42a8e1d72ad8fa24e7ba7a5923
font_02_sfnt_off0000a1b1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA1B1 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3

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