Malicious PDF — malware analysis report

Static analysis result for SHA-256 09181ba59e4adc5a…

MALICIOUS

PDF

41.0 KB Created: 2020-09-13 00:05:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: f0821879acf9d8df5ecf26a0fe7e514e SHA-1: 282f2e5f949de363a98599a94036ec415026d8cb SHA-256: 09181ba59e4adc5aa2284ef2da2f373e66e8199edc8590ad047517d13a74be78
194 Risk Score

Malware Insights

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

The PDF contains numerous links, many pointing to redirector infrastructure like 'ttraff.link', suggesting a link farm or phishing lure. The document body, though heavily obfuscated, contains the same redirector URL and benign-looking PDF links hosted on Shopify. The ML classifier strongly indicates maliciousness, and the heuristics confirm the use of redirectors for SEO-based lures.

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.link/wix?keyword=pinoy+tv+replay In PDF document text
    • http://nipukif.hermosahistory.com/uploads/1/3/0/7/130776322/japavujidad.pdfIn PDF document text
    • http://vupiv.foxfieldrecoverymission.org/uploads/1/3/2/3/132302868/kanipuwubug.pdfIn PDF document text
    • http://files.plan-itink.com/uploads/1/3/0/8/130874284/5511195.pdfIn PDF document text
    • http://files.tormot-biurorachunkowe.com.pl/uploads/1/3/1/6/131606092/621017a4.pdfIn PDF document text
    • http://files.sunshinecoastcounselling.com/uploads/1/3/2/6/132695360/525bc3843f92fd.pdfIn PDF document text
    • http://files.newdirections139.com/uploads/1/3/1/4/131483154/3ab95be8.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/1/0429/5163/9196/files/subapovisuvomakimol.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7798/2626/files/dadutuk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4093/1991/files/brooding_management_of_chicks.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8312/9251/files/40995276796.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/3eb4bd_6965d2a077da4c979b0f4b89962edacc.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/82d61e_06ad63a4a112414c94066a8bdeae1230.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/7e84b7_8ee053ae5ece4f7aa8d1634e6ff7b9cc.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_off00006561.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6561 4800 bytes
SHA-256: d17528b04d72b21a613affd10437bc8a95e75be83d85ac22bcb74691eb15a76b
font_01_sfnt_off000075cc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x75CC 9888 bytes
SHA-256: 203d1aeb1bb62023890a03b3b53b2237542d92cc9e775befcdc830240987a35d

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