Malicious PDF — malware analysis report

Static analysis result for SHA-256 2a84e600c08f0864…

MALICIOUS

PDF

43.8 KB Created: 2020-08-31 23:12:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 2e71ff7352c56fc3dcb23f2d11efd043 SHA-1: 2dfa69127405c9968fc005a382c67be6eb802cbe SHA-256: 2a84e600c08f0864c170329a3986cfcc201842823fe3a0ced0c7176de1e4df03
194 Risk Score

Malware Insights

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

The PDF contains embedded links that point to a known malicious redirector, ttraff.cc, disguised as a source for free website templates. The document body, though heavily obfuscated, also contains this URL and references to website templates, reinforcing the lure. The ML classifier strongly flagged this PDF as malicious, and the presence of numerous external links suggests a link farm or SEO poisoning attempt to drive traffic to malicious sites.

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/wix?keyword=free+blank+website+layout+templates In PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static.usrfiles.com/ugd/49be48_6415e52d1e3e47b3a0c0c0326d1d5e2d.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_0e92fb60ed864ab5a96120212c2eb62c.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_41d3e100d03a4617adf6ae15b23b07cc.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_0b7fa430d1b84ce7bc63c90139dddeed.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/ca9b0a_7a4f0fe643cf4029ab5f46251e1a4a35.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4423/9510/files/wuxisugufudapuxi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6971/8182/files/4289760707.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8180/9566/files/69207801562.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/1311/5802/files/bisaya_christian_song.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0457/4923/9964/files/98731855585.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7159/4911/files/88714133642.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006388.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6388 5320 bytes
SHA-256: a236ace7118e2d967ed4b38cb60d12e0e5ef98b9fd0c3e6a3e836247c4099cda
font_01_sfnt_off00007597.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7597 2268 bytes
SHA-256: 8770a9d16f6ec8ed1e04f7f31595c1fd3834ff76ff6f55291086ab87d6d749e8
font_02_sfnt_off00007fa9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7FA9 10060 bytes
SHA-256: c6a8af8c11123c3c50148c321c50c378f39fc2d0589cb94bdf3b9e3aa1864594

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