Malicious PDF — malware analysis report

Static analysis result for SHA-256 4bbe235d1af99e18…

MALICIOUS

PDF

40.6 KB Created: 2020-08-03 02:31:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 655615ca614c08c263dff59e37cd691b SHA-1: 33c3a3fd3b3c82b661e662951430b63b45e3685b SHA-256: 4bbe235d1af99e18e944e02c61a44c0a69d8f60470a47a42efa7f4dfdc1c487f
194 Risk Score

Malware Insights

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

The PDF file contains a mass of external links, many pointing to benign Shopify domains, but one critical link redirects through 'ttraff.cc' to a URL containing 'install brew on mac'. This indicates a lure designed to trick users into downloading potentially malicious software or visiting a phishing site. The presence of a malicious redirector link is the primary indicator of 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.cc/pify?keyword=install+brew+on+mac In PDF document text
    • http://files.afdpc.org/uploads/1/3/1/1/131164152/6541d56.pdfIn PDF document text
    • http://files.intheloopradio.net/uploads/1/3/1/4/131410007/dokaj.pdfIn PDF document text
    • http://files.thewarwicks1418.com/uploads/1/3/1/3/131379801/jodiwa.pdfIn PDF document text
    • http://files.lhfieldfamilyfdn.org/uploads/1/3/1/3/131398091/6550427.pdfIn PDF document text
    • http://files.carlakreftnd.com/uploads/1/3/1/4/131437615/kajokuzetula_goreje_zosedobe_mojukud.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/1/0431/2766/8890/files/dovuwiduv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1734/6965/files/gelosilarilen.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/5336/5910/files/puwadogujewulutede.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9597/3276/files/4888165142.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7127/4146/files/60054666892.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7211/9199/files/mugin.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1298/7802/files/lawevubudi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6137/1290/files/fulolilezepuk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/2449/6286/files/perfect_sara_shepard.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4479/8613/files/letut.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_off00006091.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6091 5116 bytes
SHA-256: ee008daf150ba9ec4840493538d9ffc8b5110c1760e907cae134844daaa90dd4
font_01_sfnt_off000071f0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x71F0 10816 bytes
SHA-256: 2c86de6bedf2a7d08de989868195c37288e4b9848044b7b1941f404da945f7f8

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