Malicious PDF — malware analysis report

Static analysis result for SHA-256 af09b2a0e1fe0680…

MALICIOUS

PDF

50.9 KB Created: 2020-09-11 19:44:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 5715b7850905e415fecd582fabd6afdd SHA-1: 8c1745ceb1db42a9367fc1d528c1ff5fb3267230 SHA-256: af09b2a0e1fe068051c1f6cbd0da3cf78d02d780aa63b1e08f54b37bcfe89025
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to `https://ttraff.club/wix?keyword=denim+jacket+style+guide`. This URL is embedded within the document body, suggesting a social engineering lure. The file also contains a large number of external PDF links, many hosted on `static.usrfiles.com`, which is flagged as a link farm. While some of these links are benign, the primary redirector is malicious, indicating the document's purpose is to lead the user 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.club/wix?keyword=denim+jacket+style+guide In PDF document text
    • http://sozafo.lindagreenup.com/uploads/1/3/0/8/130873851/fa6de.pdfIn PDF document text
    • http://fexufosuj.mrsapedersen.com/uploads/1/3/1/3/131398406/xixapaxud.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://static.usrfiles.com/ugd/0047a4_e883954b79be41cea92260dad765bf8b.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/895bef_0be8fa15ee5e43fa8a15cb37b6feeb5a.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b65acf_d4699ad333074e97bd2dbeff85d204ee.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/f4de5e_20090cbe28b644189974b2001befc563.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/3e5db3_ba46d4cbfb90411489cd6aaeb5f7b3bb.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/8ac1ab_991d34823500410c9cabdac57c901d97.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/0baf77_81313ea6bf7942ee8ab115e984986a7f.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/0af078_a981a39b703f4713b9faf69b5543a0b4.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/7a7fb1_713f9963fda6443dac594d8ddf0e150a.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/40512e_f1837455c57b45519f92cf99ca90b75d.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/3e9e83_c30d983f9d3c4fc3ac8c67297d0dbdcf.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 1

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007cab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7CAB 5176 bytes
SHA-256: 08c539d616d83eec421d12a398b021fed63ccb7d7709a648db06d67c038ccc65
font_01_sfnt_off00008e41.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8E41 10120 bytes
SHA-256: a32da9d873318920d73c42b31ea8b2ddcf3fa0f9ff2e237b521595b9f75369d9
font_02_sfnt_off0000b0e4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB0E4 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e

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