Malicious PDF — malware analysis report

Static analysis result for SHA-256 d173e21e295cd886…

MALICIOUS

PDF

37.8 KB Created: 2020-08-09 05:13:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: cc2aea9253129912c6537565851b2877 SHA-1: 4eb38f69ece990750aaafd3e4e2acac92882ebe4 SHA-256: d173e21e295cd886794867d3b0f654528f56dc813f34a6e36cf88735272d16ba
202 Risk Score

Malware Insights

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

The PDF document contains a large number of embedded links, many of which point to Shopify domains hosting other PDFs. The primary malicious link, 'https://ttraff.com/pify?keyword=bridge+to+ielts+answer+key+pdf', is a known malicious redirector. This suggests the document is designed to lure users to malicious infrastructure by masquerading as a useful resource. The presence of a 'download button' heuristic further supports this social engineering tactic.

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.com/pify?keyword=bridge+to+ielts+answer+key+pdf In PDF document text
    • http://files.goldbergacademy.org/uploads/1/3/0/7/130739227/bemajasirixifiju.pdfIn PDF document text
    • http://files.independentbaptistws.com/uploads/1/3/0/7/130776167/bbee56.pdfIn PDF document text
    • http://files.jillcarrhilton.com/uploads/1/3/1/4/131453354/1952571.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/1/0428/9835/8432/files/30617095305.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/3078/8758/files/65536840915.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3361/6803/files/zifuvufarejufoparevukele.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2271/9912/files/interior_design_case_study.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3002/0247/files/1936211220.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6853/8524/files/gijosolawuzisifeva.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2564/5211/files/fexuduxedomukoziruwudo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5181/0969/files/copper_wire_ampacity.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3234/4736/files/cath_lab_nurse_job_description.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2936/4889/files/ufc_gym_new_hyde_park.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/9028/6494/files/renuxisemusilo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7318/4678/files/nagodazozerudenigekulaki.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 5

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_off000054f6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x54F6 5516 bytes
SHA-256: 39bd68c8895303064f88b4c344580e4cbb96c84b71fd91ef8bf4a1bef9c9631c
font_01_sfnt_off000067ee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x67EE 9980 bytes
SHA-256: 6b19797016e2226ec88f48119c925bccf92272c131bc5948ff9ab4285f9c9af8

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