Malicious PDF — malware analysis report

Static analysis result for SHA-256 19b3e5dbb3badb7a…

MALICIOUS

PDF

46.3 KB Created: 2020-08-23 18:11:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 2bb08ab668d423f9b3c9bf3a03752164 SHA-1: bf20e9996ebb6f69faaff4be7a2e22d2d398f842 SHA-256: 19b3e5dbb3badb7a7e46b0c327cf67460fc315cb4313b2f348cee0398f869771
194 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.cc) that is associated with malicious activity. The document body and embedded links suggest a lure to download an APK file, likely for malicious purposes. The presence of multiple Shopify links, some marked as benign, may be an attempt to obscure the malicious redirector.

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/pify?keyword=busybox+pro+6.+7.+9.+0+apk In PDF document text
    • http://debubito.camerabeanbagsupports.co.uk/uploads/1/3/1/6/131606349/wizafofajo.pdfIn PDF document text
    • http://radazi.patagoniafallfestival.org/uploads/1/3/1/3/131398294/3547936.pdfIn PDF document text
    • http://files.butterflyposturalchair.com/uploads/1/3/1/8/131856713/kufaxadesotumumepa.pdfIn PDF document text
    • http://mibefufo.windsongpreschool.com/uploads/1/3/0/7/130738714/2946490.pdfIn PDF document text
    • http://files.theschoolofmakingthinking.com/uploads/1/3/0/7/130776363/5f844b4b1.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/1/0432/8046/6080/files/continental_ag_annual_report_2010.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0134/8255/files/63397190687.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9345/0134/files/ataxia_espinocerebelosa_tipo_7.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2795/4853/files/49467893916.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2441/4882/files/83530262050.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1573/2376/files/tujikebikenazijutevul.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9201/6280/files/7864780534.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0428/7383/files/chemical_properties_of_alkenes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0459/1924/0341/files/87940281454.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4479/8613/files/xolepomegisixus.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/papixusisijipe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6855/5415/files/52487397004.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3722/8188/files/encyclopedia_britannica_eleventh_edition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6446/7357/files/binenuwi.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_off00006cd7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6CD7 5768 bytes
SHA-256: 430a431e8ee7458560100ff1e7c44f50dff1c34a9f0b7c4d0beb292908440c37
font_01_sfnt_off0000809f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x809F 13596 bytes
SHA-256: d31ff5fe1e21b11a1c07b6c06a347283c742841d6c02229c91773b502d63e5dc