Malicious PDF — malware analysis report

Static analysis result for SHA-256 c3cc2b9e8bfebd1c…

MALICIOUS

PDF

36.2 KB Created: 2020-08-10 10:05:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: df8a881bea845d5e2239280814a3b6cc SHA-1: 3e5e25ef1c77b7b6c1ee3f515bf0015718b10ef8 SHA-256: c3cc2b9e8bfebd1c6173a7415d4733f6d096098d201f17ac47417a0089836e5f
214 Risk Score

Malware Insights

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

The PDF contains a link farm and a critical redirector link pointing to ttraff.ru, a known malicious domain. The document body, though heavily obfuscated, contains the same URL, suggesting the primary intent is to redirect the user to malicious infrastructure. The presence of numerous Shopify-hosted PDF links further supports the link farm heuristic.

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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) or Microsoft license-boilerplate documents that carry no urgency or charge/dispute escalation.
  • 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=campbell+biology+in+focus+test+bank+pdf In PDF document text
    • http://files.briggs-artstudio.com/uploads/1/3/0/9/130969306/78b08ed5cdd.pdfIn PDF document text
    • http://files.breakdown4car.co.uk/uploads/1/3/0/7/130775659/suruviteb-dipapasivakur-vikex.pdfIn PDF document text
    • http://files.nasuwtrochdale.org/uploads/1/3/0/7/130739032/277874.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/1/0435/5152/2977/files/46740992027.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5219/6249/files/ffxiv_act_boss_triggers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6533/4165/files/bartholin_cyst_patient_information.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/1197/8902/files/bomotunoramaniwatumi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8081/8581/files/63962824689.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3183/8368/files/awe_inspiring_me.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0428/0481/files/59562273461.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7295/4269/files/bibatamikibovasarijova.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4065/2960/files/tolexafev.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8799/5807/files/9292444861.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_off00004f27.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4F27 5588 bytes
SHA-256: 8c1aa0ed6efd9cd969e40a15aaaf7e21cc7a46bc12939486754d101909f62720
font_01_sfnt_off00006226.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6226 10004 bytes
SHA-256: 5affa54937e583652e18b15d53423f52d652ab1249f029e34c78c737268f2462

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