Malicious PDF — malware analysis report

Static analysis result for SHA-256 1576086506179016…

MALICIOUS

PDF

63.0 KB Created: 2020-08-14 07:13:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: e28022745558403feec676c30512a28d SHA-1: aee898fffb92c1971e1e8064ab8bbe9d1a9c5387 SHA-256: 1576086506179016b6d63614334cb0f7081dd23a7cd3c7c96e2fbb32546f51db
194 Risk Score

Malware Insights

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

The PDF contains numerous links, many pointing to a redirector service (ttraff.ru) that is flagged as malicious. The document body, though heavily obfuscated, contains a URL that appears to be part of this redirection scheme. This suggests the document is designed to lead users to malicious content, likely for phishing or malware distribution.

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=multiplying+dividing+radical+expressions+worksheet In PDF document text
    • http://files.noidurham.org/uploads/1/3/2/6/132682235/3250383.pdfIn PDF document text
    • http://bezofo.ultimatemartialartsusa.com/uploads/1/3/2/7/132741024/maxovuxuromibu.pdfIn PDF document text
    • http://pafekem.uwfkappasigma.org/uploads/1/3/0/9/130968984/87117.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0448/1263/2221/files/how_to_crop.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5467/7662/files/sezedotuketus.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/3603/0614/files/42206211842.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4789/4692/files/algorithm_design_steven_skiena.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7176/6690/files/clinical_nutrition_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4484/8295/files/sejat.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1286/5693/files/90200044697.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/5864/1573/files/63133532003.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3434/3574/files/redidawajuwixovepo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7632/1434/files/differentiation_rules_for_algebraic_functions.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1873/2191/files/25287784057.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8079/4790/files/66721418815.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5040/1943/files/xelabapi.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00009dde.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9DDE 5608 bytes
SHA-256: e97f65f92056ef1b2aa783c59de841b044f79cbbb85a0c002f16e5de32372320
font_01_sfnt_off0000b10f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB10F 15408 bytes
SHA-256: 6b7b37432743858bdebd32b940515df2f250287d57b2b9e67498ba54fa059e3b
font_02_sfnt_off0000e070.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE070 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176

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