Malicious PDF — malware analysis report

Static analysis result for SHA-256 3b3d69da0ca1f2fb…

MALICIOUS

PDF

43.5 KB Created: 2020-08-11 23:03:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 93b621584ebde03775cde51c97ae3576 SHA-1: b4fc2a8c40a3875f23a1a166ddca2c5dbe92bef8 SHA-256: 3b3d69da0ca1f2fb8811e87f526441775ac2fede2e881a9a3e528581a91a0519
194 Risk Score

Malware Insights

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

The PDF contains a mass of external links, many pointing to benign Shopify domains, but one critical link to ttraff.cc is identified as a malicious redirector. The document body, though heavily obfuscated, contains the same malicious URL and a benign-looking filename related to software programming, suggesting a lure. The primary attack vector is likely a phishing attempt to redirect users to malicious infrastructure.

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/wb?keyword=rslogix%205000%20programming%20pdf In PDF document text
    • http://files.assetviewcapital.com/uploads/1/3/1/4/131408024/f4eb49e.pdfIn PDF document text
    • http://files.quickstitchplus.com/uploads/1/3/1/4/131406222/4713347.pdfIn PDF document text
    • http://files.athicketoftales.com/uploads/1/3/2/7/132710601/pekuzolavokek.pdfIn PDF document text
    • http://files.willowcreekbands.org/uploads/1/3/1/0/131069887/ceaa79b227c.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/1/0430/4365/1741/files/23280304943.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9093/5969/files/sharebutton._to_google_analytics.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3731/0626/files/fixed_assets_accounting_entries.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8343/2096/files/23521569616.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7256/0033/files/exploraciones_student_activities_manual_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4190/7100/files/descargar_caballo_de_troya_2_masada.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5534/1977/files/fonuganawab.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3604/7522/files/runulopo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3287/1074/files/5448029722.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4028/5607/files/faradelirufodeladasovop.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/1692/6870/files/22743650388.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3087/9125/files/how_to_print_labels_from_google_sheets.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0973/5845/files/gubobakovemanejufigiveb.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1237/5207/files/korurebixosodoxunafo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/4930/2693/files/wujinimupaxi.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006a9e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A9E 5704 bytes
SHA-256: 3859adb86a278dfb27204daeab30cabe8e7e6c03b8e4f73adc6e7ccf1f3a83fa
font_01_sfnt_off00007dfe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7DFE 10084 bytes
SHA-256: 8f1c607182b7679a9be082a8c3976055551dccf09fca8c5a61c55ea30bb56310