Malicious PDF — malware analysis report

Static analysis result for SHA-256 140971d678d5dd49…

MALICIOUS

PDF

42.9 KB Created: 2020-08-06 23:04:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 036a62dda75e5989f5965f55381e7896 SHA-1: f387ce1544b7b5b2b68256fe056efbeeccdbfbad SHA-256: 140971d678d5dd49c67ac2fe3d9c8e1d112350fabddac8ac59bf297641c9b84b
194 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many of which point to a redirector service designed to funnel traffic to a link farm. The primary redirector URL is https://ttraff.cc/pify?keyword=big+data+analytics+tools+and+technology+for+effective+planning+pdf, which is associated with malicious activity. The document body, though heavily obfuscated, contains this URL, suggesting an attempt to disguise the malicious intent. The ML classifier also strongly flagged this PDF as malicious.

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.cc/pify?keyword=big+data+analytics+tools+and+technology+for+effective+planning+pdf In PDF document text
    • http://files.lamaisonneuve.com/uploads/1/3/1/4/131406826/9e1ca75.pdfIn PDF document text
    • http://simujaj.aaronjgodwin.com/uploads/1/3/0/7/130776791/36fb20d62f7816.pdfIn PDF document text
    • http://fularaduj.nursingteas.com/uploads/1/3/1/4/131453109/luvurawukekukode.pdfIn PDF document text
    • http://files.parislomas.net/uploads/1/3/1/8/131871740/e902ee3102.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/1/0432/6991/4782/files/nazomimajelemeleze.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7329/0908/files/31688687367.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9436/8663/files/nidiluzorol.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/12584167006.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/0020/7272/files/zunetodirozu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/12247178291.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2839/7732/files/arithmetic_mean_problems.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5027/0869/files/relugixokusuxoxu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5529/2322/files/61060837408.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
🗂 Part of campaign: katherinechwazik.com 3 samples

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_off00006420.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6420 5628 bytes
SHA-256: 8ebe89a0d40da2c634678e1dcf7bc47ea8a3eb24de7d7ffee8b29de98a6ac9f3
font_01_sfnt_off00007759.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7759 11916 bytes
SHA-256: 493e34669d3afae8227268f642dee37aaec240816537f9aca16f436c436dbfe8

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