Malicious PDF — malware analysis report

Static analysis result for SHA-256 0798a6508aabc1e9…

MALICIOUS

PDF

38.1 KB Created: 2020-08-17 17:46:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 6242cdd546771f28d120b12cf4d7c78c SHA-1: fdecafbc768ed8bc2360bc97fa965d59a800efd6 SHA-256: 0798a6508aabc1e9f0e76b329f4a58d17be9eba4781adf8d1754310e69846612
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous embedded links, with a critical heuristic identifying a malicious redirector URL (ttraff.com) used in a link farm. The document body, though heavily obfuscated, contains text fragments and URLs that align with a phishing or malware distribution lure. The ML classifier strongly indicated maliciousness, supporting the conclusion that this PDF is designed to redirect users to harmful 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.com/pify?keyword=darland+house+cqc+report In PDF document text
    • http://files.catalystcw.com/uploads/1/3/0/7/130738566/ponefep.pdfIn PDF document text
    • http://files.bbmaintstaff.com/uploads/1/3/0/9/130969851/3bff6.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/1/0440/1777/8838/files/classes_in_d_d.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3493/5447/files/62715543176.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4183/9511/files/jirazasagudemutax.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4141/4568/files/configuration_modem_4g_algerie_telecom.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0697/6422/files/bukedudeb.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7061/0851/files/zolipexizigorobupokukonif.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1496/3868/files/monedakovomugitijajutujal.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9812/0094/files/48758444080.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0544/4259/files/5th_grade_math_fsa_practice.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2717/7380/files/kefezodokas.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2457/9751/files/cathodic_protection_principle.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 3

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_off00005887.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5887 5284 bytes
SHA-256: ba7818e5c5191a16ed523c734302bf4784db8ee7591524eedd273585b3619b30
font_01_sfnt_off00006a71.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A71 9800 bytes
SHA-256: 3688b294818804fb14fc8b3896e6eab6cd1cf39531e5df4fd57cab4eb518279f

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