Malicious PDF — malware analysis report

Static analysis result for SHA-256 7554583aec36e212…

MALICIOUS

PDF

46.5 KB Created: 2020-08-16 18:40:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 02644ca5f7009797db33b650645cfbd2 SHA-1: cb36d0c07d42f7bdf18ff4745e3003e2864b2553 SHA-256: 7554583aec36e212552670251c27f121936237948a3ca965aade869217af0c45
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file contains numerous links designed to create an SEO link farm, with a primary redirector pointing to malicious infrastructure. The ML classifier strongly indicates maliciousness, and the embedded links are indicative of a phishing or malware distribution scheme. The primary malicious IOC is the redirector URL.

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.com/pify?keyword=gastrointestinal+tuberculosis+pdf In PDF document text
    • http://files.optimisticliving.com/uploads/1/3/1/4/131453106/jibejekupemaburofi.pdfIn PDF document text
    • http://files.allergysupportcentre.org/uploads/1/3/1/0/131070934/3d82a087ee.pdfIn PDF document text
    • http://files.istmstyles.com/uploads/1/3/1/3/131398036/34ccb4e5e73.pdfIn PDF document text
    • http://gidigo.mx.danielreinhart.com/uploads/1/3/0/7/130776428/xuzuvonezagusiw.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/1/0431/0522/2818/files/95862637613.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7341/3032/files/12894884620.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7075/7791/files/35793103793.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0621/4819/files/muscle_hypertrophy_workout.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/35022180152.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3293/6605/files/voreziwomekugefujax.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/1944/0028/files/boston_harborwalk_map.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0381/3781/files/menatisikunabizezi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1969/7308/files/agni_siragugal_tamil_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6278/8245/files/86950584379.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9975/7474/files/2679118485.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/7930/1288/files/writing_polynomials_in_standard_form.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 4

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_off00007670.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7670 5320 bytes
SHA-256: 3d322a6870d221802acb62e2f3ee7ded04aa47c116fefadab9292bfc10eb013b
font_01_sfnt_off00008890.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8890 10700 bytes
SHA-256: dfe5894ac47340307dd3a8b0dad59d13b65672283215287333f2b8cdacf7ff4d

Open this report in the interactive analyzer, or submit your own file for analysis.