Malicious PDF — malware analysis report

Static analysis result for SHA-256 ec3bd9efbba4b972…

MALICIOUS

PDF

45.2 KB Created: 2020-08-27 21:21:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 83b43831dfd37323fd81d40141812d83 SHA-1: b38d62569fbc1fab68018d4d590787954c8754d2 SHA-256: ec3bd9efbba4b972d40f67e3a576daa45e0edf2f1b54eb7d27818aad3853418b
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a large number of embedded links, many of which point to PDF files hosted on Shopify. One of these links, 'https://ttraff.cc/pify?keyword=track+1+2+3+generator', is identified as a malicious redirector. This suggests the document is part of a link farm designed to direct users to malicious content, likely for phishing or malware distribution. The presence of the 'wkhtmltopdf' metadata also indicates the PDF was likely generated programmatically, which is common for spam campaigns.

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=track+1+2+3+generator In PDF document text
    • http://zurov.flowerdeb.com/uploads/1/3/1/8/131856166/didozepuj-bafabovorusiz.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8005/5958/files/berichtsheft_vorlage_shk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7220/0608/files/bukipibelavebot.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8432/4770/files/pasataliwifukewekupubaxo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/6001/6790/files/speedbit_video_downloader.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6078/9409/files/coulomb_s_law_examples.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7142/2102/files/84185278856.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6183/0037/files/81472314162.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8489/7701/files/digikiripiloxesi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7410/1149/files/59988727655.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/8619/8424/files/pozipalejakimotevowojojep.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3458/1911/files/bernina_830_manual.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 3

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005d60.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D60 4856 bytes
SHA-256: 777f3f2373ad27be90e1efd7ac8ca55ab75cf57f2e4a51c8914792cb2893047e
font_01_sfnt_off00006df0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6DF0 14048 bytes
SHA-256: c8ab1f3d6ce5d4898e70172ca9273590a62bfd2faa4dd007003333e414ddce18
font_02_sfnt_off00009a1f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9A1F 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176

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