Malicious PDF — malware analysis report

Static analysis result for SHA-256 16125e3a43bc89fd…

MALICIOUS

PDF

41.9 KB Created: 2020-08-23 19:31:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 0dcb9e3761dfd3673d10dc9e537056b1 SHA-1: 14f85b4b26285b7b167ed585d3044baa3dac404f SHA-256: 16125e3a43bc89fdaa1d8d8b00ae26dc868b704f3a89d7b961c7101b319caf51
202 Risk Score

Malware Insights

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

This PDF document contains numerous links designed to appear as a "Cydia beginners guide" but redirects to malicious infrastructure. The primary malicious link identified is https://ttraff.cc/pify?keyword=cydia+beginners+guide, which is flagged as a known redirector. The document also hosts a large number of other PDF links, suggesting a link farm or SEO manipulation tactic to distribute the malicious content. No scripts were extracted, but the embedded links and heuristic firings strongly indicate a phishing or redirection attack.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=cydia+beginners+guide In PDF document text
    • http://files.tilttrucksaccessories.com/uploads/1/3/1/4/131437362/9b5bb4e02b48c.pdfIn PDF document text
    • http://files.earthsideholistic.com/uploads/1/3/0/7/130775229/9e24c12befca0.pdfIn PDF document text
    • http://files.digirhetorics.org/uploads/1/3/2/6/132682820/xekobigokivawejuw.pdfIn PDF document text
    • http://files.multidis.org/uploads/1/3/0/7/130739802/xaverezisituta.pdfIn PDF document text
    • http://files.krownstl.com/uploads/1/3/0/8/130813042/zabadatajezoni-viroxosaja-dusideranagej.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/1/0436/4356/8278/files/sipabigaloxe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5117/9416/files/zijufebomurarar.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2325/4179/files/63053831652.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5593/9733/files/lesitegesebejelubewuli.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8565/2375/files/bixusitu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1504/4252/files/91422328549.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5716/8027/files/64651490555.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/9906/8310/files/75737657797.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2457/9751/files/54923704100.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3089/6026/files/1st_grade_phonics_worksheets.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_off00006667.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6667 5108 bytes
SHA-256: eb3cd6157c47cc366a896dbef8a0f335d396a29afc69ecf84065cdd6233c6f45
font_01_sfnt_off000077da.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x77DA 10288 bytes
SHA-256: ebac13bd97122cff017848d63b728fd28f10f826fd70c482f8bd714b6c46fc45

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