Malicious PDF — malware analysis report

Static analysis result for SHA-256 0338aa0e1800899e…

MALICIOUS

PDF

48.2 KB Created: 2020-08-20 13:28:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 34a630327ab71aa764c53a4a8994370e SHA-1: 6776d9a7346577b76db571b00e234653e9c97814 SHA-256: 0338aa0e1800899e4898c9b2ee0996657b0c72cec4ee73f6aff08cb91acdc887
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains multiple heuristics indicating malicious redirector links and a link farm, suggesting a phishing or scam attempt. The embedded URL 'https://ttraff.ru/pify?keyword=4+liker+app++new+version+2018' is identified as a malicious redirector. The document body, though heavily obfuscated, also contains this URL, reinforcing the lure to click the link. The ML classifier strongly flagged this PDF as malicious.

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=4+liker+app++new+version+2018 In PDF document text
    • http://boxuv.emathacademy.com/uploads/1/3/0/7/130776445/1736911.pdfIn PDF document text
    • http://files.tundratour.com/uploads/1/3/1/4/131408204/nomofi.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/1/0433/4023/4902/files/97693375005.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9663/7597/files/7363842630.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4272/5285/files/jaligorud.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7446/2631/files/fidovizigunafawigedo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3173/2132/files/79522079994.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1765/8780/files/character_motivation_worksheet_8th_grade.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7974/6201/files/66960110567.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8693/0329/files/81691951845.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8860/9429/files/classification_of_matter_quiz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8759/2608/files/39329234062.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4729/6922/files/ziwoluvopiz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1024/5286/files/6355735208.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0450/4230/3140/files/video_surah_al_mulk.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 2

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_off00007ed1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7ED1 5544 bytes
SHA-256: 664b487bb98143271086095dabb4001ead6e67e4c063dec28ff798b4b62d2e8b
font_01_sfnt_off000091d5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x91D5 9904 bytes
SHA-256: 24900ca5313f801917f397955917411bc2379a5e3f3d7de6df6f7499c628b314

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