Malicious PDF — malware analysis report

Static analysis result for SHA-256 33c83bb17743455c…

MALICIOUS

PDF

49.4 KB Created: 2020-08-05 14:44:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 25ffcd2327125bdf17dab08323535eb5 SHA-1: d085241519b3c4d78ca5632b3679d4bfa205ab98 SHA-256: 33c83bb17743455c9e4501665fc3dca577ad01cca79abe6c4e0115db8452af1e
194 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.com, which is likely used to host further malicious content or phishing pages. The PDF also features a large number of external links, many pointing to Shopify domains, suggesting a link farm or SEO poisoning tactic to attract victims. The ML classifier strongly flagged this PDF as malicious, supporting the conclusion that it is designed to lead users to harmful 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.com/pify?keyword=calendar+2020+pdf+malaysia In PDF document text
    • http://files.worlds50bestsushi.com/uploads/1/3/1/3/131381112/f144341.pdfIn PDF document text
    • http://tuxujekij.leahcarolinejones.com/uploads/1/3/0/7/130738731/betutezabomude_xiwuz.pdfIn PDF document text
    • http://files.westwoodchristianchurch.net/uploads/1/3/1/3/131383791/b735d9356a.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/1/0428/9835/8432/files/wizivudid.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5280/1954/files/21605026084.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0857/3085/files/8554073545.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2738/9851/files/wajifisavevaweruzu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3404/8669/files/dajimafemumadada.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3954/5761/files/sudupegusupemifolafigivur.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4547/6762/files/bsc_academy_magazine.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4680/5408/files/borezolex.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/9309/6600/files/21049822561.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4489/6917/files/p_value_formula_excel.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7478/0312/files/22268472470.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/0375/4142/files/jackson_ky_weather_radar.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2779/8943/files/curvature_k_calculator.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000066d0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x66D0 5468 bytes
SHA-256: bf78f49e877e66cb5c03474bff78993d63ea5496d4ba1011657880b820387bf0
font_01_sfnt_off00007955.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7955 13648 bytes
SHA-256: 16e88900a5b04cf4fb596c493997b4203379b1b2af740d8a62a372215019e511
font_02_sfnt_off0000a384.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA384 16108 bytes
SHA-256: 32f4f1f0b695e5d4615fbcad4b5b3a29e2120f680b26ad6392bb678d83ba1141