Malicious PDF — malware analysis report

Static analysis result for SHA-256 e41db139ab4213ac…

MALICIOUS

PDF

41.8 KB Created: 2020-09-02 01:53:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 07c31f478ff9f62c17e6bbd8d21adf2a SHA-1: 213fbfe710c84d163b69c92d8454aa3384c6e095 SHA-256: e41db139ab4213ac37f2c6e8a388c292bde57e128708a31615c3dc70039a0a1e
202 Risk Score

Malware Insights

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

The PDF contains numerous links, many pointing to a redirector service (ttraff.club) that is flagged as malicious. The document body, though heavily obfuscated, contains text related to 'certificate templates printable' and a URL that appears to be part of a link farm designed to attract users. The presence of multiple embedded URLs and the ML classifier's high confidence score indicate a malicious intent to redirect users to harmful content, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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/pify?keyword=certificate+templates+printable In 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/1/0462/7493/6994/files/asn._1_viewer_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5837/1496/files/27292951468.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2556/2775/files/present_value_annuity_factor_table.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6522/1028/files/pijasak.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8255/5297/files/tegon.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/fd3290_c21a5f8aaf8342259dff3ad0f5fd5e24.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5822/4549/files/56790633945.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2511/1972/files/fugufanavunemeni.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5211/2804/files/tazomidubuwubanumazile.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/4dd980_7e82a4ed70cd490f9c94ebe1bcedf376.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_053808e8de0a4b62b6f65f7f8946bbac.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_da0e981594ba4776892747714e25d664.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006686.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6686 5208 bytes
SHA-256: 4890ce7df01a33d1b0d5b1cbd788a219f43f3bbab2a5137dfe3b86b02d363b0e
font_01_sfnt_off0000781a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x781A 10060 bytes
SHA-256: cb195283f33a749ae4813ccccf7c0a9ce373de6c2a936c498aa9c1d6589d91bc

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