Malicious PDF — malware analysis report

Static analysis result for SHA-256 fdc11704f4bb3377…

MALICIOUS

PDF

41.5 KB Created: 2020-08-25 16:29:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: ab8b9619aee40a4ef48498ee4aa8e23c SHA-1: 9bdfa7fd92f7ac6cb407732c87f8779a97dfb161 SHA-256: fdc11704f4bb337736c6d5210c980cff4c3b379221c6f97dad30a4617b456216
194 Risk Score

Malware Insights

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

The PDF was flagged by multiple critical heuristics for containing malicious redirector links and a link farm. The embedded URLs, particularly the one pointing to 'ttraff.ru', are indicative of a malicious redirector. The document body, though heavily obfuscated, contains references to the same URLs, reinforcing the malicious intent. No scripts were extracted from this sample.

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=answering+reading+comprehension+questions+tips+ks2 In PDF document text
    • http://files.lincoln-realty.com/uploads/1/3/2/6/132683000/wosidekoz.pdfIn PDF document text
    • http://pejetewu.shaeshaeshae.com/uploads/1/3/2/6/132681670/61e96.pdfIn PDF document text
    • http://files.mspokrantsband.ca/uploads/1/3/1/0/131070526/43b4a4fd.pdfIn PDF document text
    • http://desobilej.kwikwashlaundromat.com/uploads/1/3/0/8/130874583/73bc834aed5.pdfIn PDF document text
    • http://files.catherine-banner.com/uploads/1/3/1/4/131453267/f6c2aa21.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/1/0429/3882/6908/files/datoginowetimigadu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0443/6285/8652/files/data_analysis_in_research_proposal.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/0171/4587/files/mizog.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2521/0263/files/biblia_el_nuevo_testamento.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5180/9957/files/53397693145.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9980/0217/files/sony_ericsson_w_580i.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/vemuvuferakodumi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4609/2445/files/all_weather_strategy_portfolio.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1791/0941/files/47046682494.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1498/7674/files/dujawasupuzegetubelej.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4664/1570/files/3405366866.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3672/8726/files/35365847728.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 5

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_off0000633c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x633C 5856 bytes
SHA-256: bf75161e81fb93beb5a419124a87051322bf5c5d7164b1523cdee0def382703a
font_01_sfnt_off00007709.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7709 9888 bytes
SHA-256: 99fbd2b24acfc9662a56c28acb593d28dabd893c1a5b2f5b1a45a50fbb187544

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