Malicious PDF — malware analysis report

Static analysis result for SHA-256 8a693fab769d7f2e…

MALICIOUS

PDF

45.1 KB Created: 2020-08-10 08:42:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 558e2a14b76a7c13b30d2dfa42e7a5c6 SHA-1: 30267c58a3ceddb78e040432c2126ec1dfb0bc7b SHA-256: 8a693fab769d7f2ee82eadf5ca269da91ccc70a84293773463aaf0b0e6990609
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 links, identified as a link farm. One of these links, 'https://ttraff.ru/pify?keyword=los+grandes+economistas+pdf', is flagged as a malicious redirector. The document body is heavily obfuscated and contains what appears to be junk data, but the presence of the malicious redirector and the link farm structure strongly suggests a phishing or malware distribution attempt.

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=los+grandes+economistas+pdf In PDF document text
    • http://files.kevinsjobe.com/uploads/1/3/1/3/131381946/xipazesusu-fodeser.pdfIn PDF document text
    • http://files.thescribblersjournal.com/uploads/1/3/2/6/132695200/xoduzigujizigunugivi.pdfIn PDF document text
    • http://files.keepitrealparenting.com/uploads/1/3/2/7/132740547/c8b9608.pdfIn PDF document text
    • http://files.destinyhorses.com/uploads/1/3/0/9/130969172/kegik.pdfIn PDF document text
    • http://files.floridafundraiser.com/uploads/1/3/0/8/130873851/87b15e9ab8f0835.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/1/0434/0521/3854/files/36980882821.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8992/8096/files/meteorological_station.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/6090/1528/files/atualidades_2020_estrategia_concursos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3393/6547/files/69374153308.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1750/2869/files/fimikatemunasukagiwoja.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1631/4277/files/vobaxiniwajug.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0897/4235/files/11252611095.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0776/9750/files/difijogumelumot.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0452/8213/2130/files/problem_solving_techniques_in_computer_science.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0507/4838/files/xemibimipinadag.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5911/7206/files/99863824909.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3519/6568/files/5288361827.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/27482348981.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006ed3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6ED3 5384 bytes
SHA-256: b633e17a7311df1bbd660d3f27cced989ce2c387a926e0b0d97ac072598920a7
font_01_sfnt_off00008113.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8113 11168 bytes
SHA-256: b6205e3d51f57826572889dcc4a2ae0e909ba29b0bbba3d3c113e5c3455cd3e6

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