Malicious PDF — malware analysis report

Static analysis result for SHA-256 e73dbcb39979bd0f…

MALICIOUS

PDF

42.7 KB Created: 2020-08-20 03:49:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b28345634916718de3675c353c74ae93 SHA-1: b3f8e1bdf5239e5ddada4c4537bac17e0357aaf1 SHA-256: e73dbcb39979bd0f39798224558afee4d95a722938e3356aa0b27a08dd17f07c
202 Risk Score

Malware Insights

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

The PDF contains a mass of external links, many of which are hosted on Shopify, suggesting a link farm designed to appear legitimate. One critical heuristic identified a link to a known malicious redirector, ttraff.cc, which is used to obscure the final destination. The document body text and embedded links suggest a lure related to an 'admit card', likely a phishing attempt to trick users into clicking the malicious redirector URL. No scripts were extracted from this sample.

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=admit+card+ignou In PDF document text
    • http://zubal.noretasdecor.com/uploads/1/3/0/8/130813765/b7bceef.pdfIn PDF document text
    • http://files.thevillageworkshop.com/uploads/1/3/2/6/132682640/bbac76a9cb78ae.pdfIn PDF document text
    • http://files.betweentheriversgathering.com/uploads/1/3/1/8/131856664/terejuwar-zevuvowopo.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/1/0432/3164/1762/files/29902380153.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4832/1692/files/53847205952.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6556/3549/files/9034428001.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5306/3063/files/circle_with_transparent_background.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0594/3701/files/slope_intercept_to_standard_form_calculator.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9472/7074/files/29254074509.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3194/3585/files/bewojenopokuxun.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 4

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_off00006b4c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B4C 5040 bytes
SHA-256: b91dc81ceaa85878484b579eb737f1f313d2f77b47fed08802721101888cf7d4
font_01_sfnt_off00007c4a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7C4A 10052 bytes
SHA-256: 346623c148974d4e7b04cdf9806bfd71f9c1292fe88b5a907e83e376f89ad10a

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