Malicious PDF — malware analysis report

Static analysis result for SHA-256 a7fefb342d8f1f2c…

MALICIOUS

PDF

36.6 KB Created: 2020-08-26 02:09:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 54d888a75590331dfcacc6fe0161c719 SHA-1: 228aa3b65d62cd6069e2265ea95b128e18c90894 SHA-256: a7fefb342d8f1f2c9b3444aca5bcd25fa2aa76d0b4ff2cec0fbc61ca7345edd7
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a heuristic firing for a malicious redirector link, which is also present in the document body. This link, 'https://ttraff.ru/pify?keyword=dr+bhatia+medical+coaching+institute', is designed to lure victims by impersonating educational content. The file also exhibits characteristics of a link farm, with numerous embedded URLs pointing to external resources, many of which are hosted on Shopify. The primary malicious link is likely intended to redirect users to a compromised or malicious site.

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.ru/pify?keyword=dr+bhatia+medical+coaching+institute In PDF document text
    • http://jogagumek.skilledpaint.com/uploads/1/3/1/0/131070894/jidebuzizeva.pdfIn PDF document text
    • http://mutap.anerdinpearls.com/uploads/1/3/0/7/130776485/7217480.pdfIn PDF document text
    • http://files.chennaishiayouth.com/uploads/1/3/0/7/130740589/joxax.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/1/0430/8670/8885/files/70550036822.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5556/2398/files/all_taekwondo_black_belt_forms.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0273/9363/files/premium_psd_website_templates_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5575/9011/files/zegovaredumobafogo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5529/2321/files/jomurok.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0361/7173/files/learn_bisaya_language.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5622/6716/files/suridowexubazofufek.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/46283819311.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8568/5153/files/jijitolelasamam.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5179/5107/files/toyota_automatic_transmission_troubleshooting.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5809/4495/files/62874204798.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6467/1909/files/dvt_treatment_guidelines.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4346/3074/files/78177469532.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_off00004fe9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4FE9 5492 bytes
SHA-256: b8c8371fbe99569fbece1bfa3a80c6f1025759a491b3354a19a26cdafe8651f7
font_01_sfnt_off0000626e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x626E 10012 bytes
SHA-256: ce8c704e9c01e33aaf2ea12cdf1dd427e629ff01dd880a4b389e30bed113037e

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