Malicious PDF — malware analysis report

Static analysis result for SHA-256 be447e1b99a98817…

MALICIOUS

PDF

46.6 KB Created: 2020-08-12 20:21:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 2d89d07932fc1ea8216667bd72f42306 SHA-1: 3a381ca69848e0bce8243fb5e80819b70b0bf05f SHA-256: be447e1b99a98817ed8824e1e6d78e4402b6fe3e5fcd54712a9c7d03280e3d45
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with one specifically identified as a malicious redirector. The ML classifier strongly indicated maliciousness. The primary malicious IOC is the redirector URL, which likely leads to a phishing or malware distribution site. The document body, though heavily obfuscated, contains the malicious URL and other links that appear to be part of a link farm designed to improve search engine ranking for malicious content.

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=assertive+communication+training+pdf In PDF document text
    • http://files.kaufsyrup.com/uploads/1/3/0/8/130874058/xelunavutub_lezoj.pdfIn PDF document text
    • http://files.brphotography100.com/uploads/1/3/1/4/131437750/fevalokitawe-tutat-teruf-dedisoxaxizuv.pdfIn PDF document text
    • http://files.thefeatherednestdowntownwestjefferson.com/uploads/1/3/1/3/131382113/2964567.pdfIn PDF document text
    • http://pobis.randischneweiss.com/uploads/1/3/1/4/131437949/pesegiwomo.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/1/0437/3220/5722/files/63141199245.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/69143450337.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/0994/7301/files/tafamo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7111/1330/files/81612007167.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6647/5164/files/ancient_history_magazine_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9899/5864/files/ralifedogobofe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7437/8142/files/flow_cytometric_immunophenotyping_for_hematologic_neoplasms.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6214/8763/files/wufuzud.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8523/3318/files/bronkopneumonia_2020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1356/2787/files/vijoguzaludogojukujofufo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/3584/1944/files/13028773777.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_off0000775f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x775F 5492 bytes
SHA-256: b220d3dd9068c7e617b9bf1475f91ccb15643d6d5b191f1572201e62ae0520cd
font_01_sfnt_off00008a01.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8A01 10456 bytes
SHA-256: b020fc97fc798b303529b0af1c23af0eee553def598d6b254c99700d53e036f2

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