Malicious PDF — malware analysis report

Static analysis result for SHA-256 70a3fdd527795574…

MALICIOUS

PDF

42.6 KB Created: 2020-09-10 01:40:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 1af8237eae08dd68ba5b6a09545cd42a SHA-1: 8fbf489bae3912beecffc16dcbbd60ea4387649b SHA-256: 70a3fdd527795574cb5307c777ebbf50b1c441f887cf2f8d91ce85b0e00cb58b
194 Risk Score

Malware Insights

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

The PDF contains numerous links, many of which point to redirectors and SEO link farms, indicating a phishing or scam attempt. The primary lure URL, 'https://ttraff.link/wix?keyword=lab+report+conclusion+example+chemistry', is flagged as malicious. While no scripts were extracted, the PDF structure and embedded links strongly suggest a social engineering attack designed to redirect users to malicious 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.link/wix?keyword=lab+report+conclusion+example+chemistry In PDF document text
    • http://files.ktplanning.org/uploads/1/3/0/7/130775998/zojamikovo.pdfIn PDF document text
    • http://files.generationjobless.eu/uploads/1/3/1/0/131070231/dokolekoxut.pdfIn PDF document text
    • http://segalavaz.etec533.site/uploads/1/3/0/8/130874222/gatifelupuzor.pdfIn 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/5ecadc_53bba358b1864bb297c7f3c5720a3324.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/0511f5_43817ba0bb794f0bbec889072942be90.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/3eb4bd_b10c7f56a0ec420e848bb796860e2d9c.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/4bdc6d_a1e902f481b94c4593e04c95d289fcc7.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/5befcb_7fe811ff3767443d8a2d2ede62d44810.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/1715bf_b1bba71f66b24b338ef6049c7b2b56e4.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/bcfc12_a6974769a8a142238a1c1c478cf56979.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/912de2_ab49d125daa242688aa70c14bbb6d92a.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/f3cb45_9ebeea53effb4a65822c2aed7ba45c19.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_54e0d526506b431ab5c943c5b52a4383.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 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_off00006861.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6861 5424 bytes
SHA-256: af00a5f407f6a6a34158520780cb5d60dfd4e07f7f770cd428e6b9c7feb3dcd3
font_01_sfnt_off00007aae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7AAE 10272 bytes
SHA-256: 341e6c17657d4330a577786bcf89c1518a4bfca71a2c983eb2e323736572d591

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