Malicious PDF — malware analysis report

Static analysis result for SHA-256 1dbb7a38245197b2…

MALICIOUS

PDF

42.0 KB Created: 2020-08-04 04:47:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a1784ba197d9075c452a7aa37b6c5fe6 SHA-1: 57d813711d71bfdc66021d1fb65b323735995b2d SHA-256: 1dbb7a38245197b29027aace024e6408cfcb3d73a349a4cc06f7835a93e17d7b
194 Risk Score

Malware Insights

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

The PDF contains a link to a malicious redirector, ttraff.cc, which is designed to lead users to malicious content. The heuristic PDF_SEO_LINK_FARM indicates a large number of external links, suggesting a link farm for SEO manipulation or to distribute malware. The ML classifier strongly supports the malicious nature of this PDF. No scripts were extracted, but the presence of a malicious redirector URL is a high-confidence indicator of malicious intent.

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=download%20ebook%20kopassus%20untuk%20indonesia%20pdf In PDF document text
    • http://files.newtonwellness.org/uploads/1/3/0/8/130874495/bewepenula_gewuporaza_lajupiriv_xigabep.pdfIn PDF document text
    • http://files.nataliemariaclark.com/uploads/1/3/1/4/131408432/f003613619e53.pdfIn PDF document text
    • http://files.westport.votersguide.info/uploads/1/3/1/3/131382018/zasiwewebab.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/1/0437/3191/0821/files/44145474558.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1473/3480/files/12086164296.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4386/4228/files/rimip.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5450/5882/files/88386240640.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9363/8811/files/tiravituturukexalifuj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/vebamuwonodivori.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0892/5600/files/32811938505.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0252/7897/files/27231400006.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/2459/4597/files/34022250463.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8915/8554/files/warcraft_3_version_switcher.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4597/6224/files/usps_delivery_instructions.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4927/7845/files/pipijebupipawobowadobe.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000669b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x669B 5232 bytes
SHA-256: d182735da4813e60bd7773b2455718f2b6d6e20436767e5d92302a1233416c08
font_01_sfnt_off00007891.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7891 10032 bytes
SHA-256: b04b49e7fa0401ff25a5fc22e068a9cc4c4040317449b9bf03e0972b4046c074

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