Malicious PDF — malware analysis report

Static analysis result for SHA-256 313c0ef846ac6bf5…

MALICIOUS

PDF

47.6 KB Created: 2020-08-14 07:25:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 858e3d64fb48edb05cb9db8cc115cd00 SHA-1: e359f15b45cb795cce188e4f47c4066db7adc1ed SHA-256: 313c0ef846ac6bf513b8aee1a5acf8228b7fec2b154f179b1978dbfe7d65d443
194 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://ttraff.ru/wb?keyword=bioenergetics%20pdf%20lowen'. Additionally, it exhibits characteristics of a PDF SEO link farm, with numerous links pointing to external PDFs, including one hosted on Shopify. The document body, though heavily obfuscated, contains the same malicious URL and several benign Shopify URLs, reinforcing the intent to lure the user to the malicious redirector.

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/wb?keyword=bioenergetics%20pdf%20lowen In PDF document text
    • http://files.27andoak.com/uploads/1/3/1/8/131856844/6002040.pdfIn PDF document text
    • http://files.growyourteaching.com/uploads/1/3/0/9/130969404/4003942.pdfIn PDF document text
    • http://lagaven.ringoleather.com/uploads/1/3/0/9/130969985/43b2725a.pdfIn PDF document text
    • http://robik.seansschoolofmusic.com/uploads/1/3/2/7/132711991/2987132.pdfIn PDF document text
    • http://files.nurturingarrowsdoulacoach.com/uploads/1/3/0/9/130969818/wuwegejibo.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/1/0431/9202/5249/files/kaguxadeguzatusojepad.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3292/8671/files/togajoduxabunitozedetoli.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6660/5211/files/kasexewiko.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4603/4853/files/80826115632.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2145/8853/files/2206754618.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4726/4166/files/zesedote.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3191/9765/files/43576355795.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7563/3306/files/chemical_bonding_class_11_notes_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6045/2760/files/93913843395.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0263/4148/files/javesomira.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006f35.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F35 5040 bytes
SHA-256: 5bd05d9b7783f51acb21bc50d59636bf0fc3401b4a565357cc99af7aad4bd89f
font_01_sfnt_off0000807e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x807E 10208 bytes
SHA-256: 0df7ec8ecc4a68bfe0e1d12ed6a023848004ae9b7ca6b7eba15dfe3c5e1416c6
font_02_sfnt_off0000a374.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA374 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f

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