Malicious PDF — malware analysis report

Static analysis result for SHA-256 190835759793fb23…

MALICIOUS

PDF

45.8 KB Created: 2020-08-16 20:58:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 7f71d17088b48cf84df14d8c02affcc7 SHA-1: 445227da7054b9ab0d7caf23c94c5897b9191edc SHA-256: 190835759793fb23fb731df449cb9490bfe2f1d0422ff005778744e32ec99d31
194 Risk Score

Malware Insights

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

This PDF document contains numerous links designed to appear as legitimate downloads, but they redirect to a malicious domain. The heuristic firings indicate it's a link farm and a redirector, likely intended to phish users or lead them to malicious content. The embedded URLs, particularly the one pointing to 'ttraff.ru', are flagged as malicious redirectors. No scripts were extracted, but the document structure itself facilitates the malicious redirection.

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=similarities+between+meiosis+and+mitosis+pdf In PDF document text
    • http://files.americanitaliancancer.org/uploads/1/3/1/1/131163969/sipufujunele-pubipa-tofolozavoxize-xoxojopobasano.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/1/0455/6242/9605/files/basic_colour_wheel_template.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8529/9876/files/liwunoguwe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5413/6473/files/a_travs_de_mi_ventana_descargar.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/8619/8424/files/relinebidexoganakimepil.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0070/9791/files/creo_parametric_4._0_tutorial_deutsch.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5619/3955/files/hollywood_adventure_movie_hd.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3346/7807/files/easy_ukulele_chord_chart.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4823/8242/files/airpods_2_android.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7311/7087/files/zuxanosefuzenof.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9440/0414/files/intergas_boiler_manual.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 1

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_off00006702.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6702 5312 bytes
SHA-256: 86cd16307cd6bc81323c85eedccfbbc2520832c6d6a966b8929bb5f8d7c2c8ca
font_01_sfnt_off000078ef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x78EF 10376 bytes
SHA-256: 0e7ff0049eb2bcf23468d0126e799888b055a87dd9f3181f124ffd5aeb708d14
font_02_sfnt_off00009c4d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9C4D 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f

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