Malicious PDF — malware analysis report

Static analysis result for SHA-256 590f7c1363628b6c…

MALICIOUS

PDF

41.0 KB Created: 2020-08-13 21:57:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 761cf7077ccbccfd009e9844430dd7a6 SHA-1: 504f2f2b16d2f19ae234294faf420f4806357522 SHA-256: 590f7c1363628b6cdec1e3ddb9ccc25c338062d87cee91ae3d0f85f64fed2def
194 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded URLs, many of which point to external PDF files hosted on various domains, including a known malicious redirector. This behavior is indicative of a link farm designed to manipulate search engine rankings or distribute malicious content. The primary malicious URL identified is https://ttraff.ru/pify?keyword=cost+control+techniques+in+manufacturing+companies+pdf.

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=cost+control+techniques+in+manufacturing+companies+pdf In PDF document text
    • http://files.goatskins.com/uploads/1/3/2/6/132681033/rofiv_zixubiseberekok.pdfIn PDF document text
    • http://files.ecardsvs.com/uploads/1/3/1/4/131406390/tuwajuvubavelol.pdfIn PDF document text
    • http://files.louiselightworker.com/uploads/1/3/1/6/131607075/neresopik_rilovamuwowixu_sulitareniwemi.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/1/0431/6463/1195/files/46358086254.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9938/1157/files/99293825227.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5830/6965/files/girenolakivur.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/2217/7688/files/medical_english_lessons.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1359/3499/files/luzizonovit.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7079/9510/files/17920158574.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8628/9832/files/motepeg.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9622/0572/files/30375163141.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2478/4292/files/biological_science_let_reviewer.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/6503/1321/files/yayati_marathi_book_download_free.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 6

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_off000062ab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62AB 5600 bytes
SHA-256: 8054a6dc378c1daadf1da8be9d04a01b32801961dd670a6a17a6e91486e5902a
font_01_sfnt_off0000757d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x757D 9752 bytes
SHA-256: 5d440b78e5f5110ab7f6b4252a48abd12f28bf716b7388d02c78dff0dd8606f7

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