Malicious PDF — malware analysis report

Static analysis result for SHA-256 dd68261c9af5daf1…

MALICIOUS

PDF

36.4 KB Created: 2020-08-21 16:56:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 1e8fa683bbffc31378721aa9d1b42f5f SHA-1: 2b81929a3164c4b5bcf350b4b18e1b08e81e39a4 SHA-256: dd68261c9af5daf1282d44e482f67a504c7e07a0708e158bbeecff4f60445d91
194 Risk Score

Malware Insights

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

The PDF contains a significant number of embedded URLs, many of which are part of a link farm. One critical heuristic indicates that the PDF links to known malicious redirector infrastructure, specifically 'https://ttraff.ru/pify?keyword=gaming+intro+template+after+effects'. The ML classifier also strongly flagged this PDF as malicious. The presence of numerous links, including those pointing to potentially malicious redirectors, suggests a social engineering attack aimed at luring users to malicious websites.

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=gaming+intro+template+after+effects In PDF document text
    • http://files.sweetspotstrategies.com/uploads/1/3/0/9/130969404/tenor_nexit_tojujerekivo.pdfIn PDF document text
    • http://paxed.topnotchmanagement.com/uploads/1/3/0/9/130969077/872573.pdfIn PDF document text
    • http://files.littleeggandcarrot.com/uploads/1/3/1/4/131406234/9791290.pdfIn PDF document text
    • http://files.tantrumsandtofu.com/uploads/1/3/1/8/131871467/6365592.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/1/0440/0830/8886/files/sekiro_purple_gourd.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1340/5850/files/uptet_answer_key_2020_primary_level_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/tijubijevuvikupox.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6209/9097/files/shake_it_out_glee.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3761/4499/files/deductive_and_inductive_approaches.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1619/1125/files/sigamubuvafexurumawode.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4523/1515/files/48695723701.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5007/4269/files/81272004345.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3267/2413/files/jatusuxajej.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3333/7768/files/43156741038.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_off0000512e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x512E 5364 bytes
SHA-256: 0db38a4575c02f98839389f336f81ee54f896014f674515d1753f87cd87de1a5
font_01_sfnt_off0000635e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x635E 9844 bytes
SHA-256: 4dd2c9923445f5093c339059f0d085713e0e46e4da10c1e730ff64319df10c0f

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