Malicious PDF — malware analysis report

Static analysis result for SHA-256 2819d2c43cebfda9…

MALICIOUS

PDF

45.9 KB Created: 2020-08-02 13:03:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 8b5356fe94deadfe8d0d70eee6e3adc4 SHA-1: c98885b321cbc6b75fbde222287a819eb9035641 SHA-256: 2819d2c43cebfda9f562a2f034c51689d6a4e0b764e797871dc2f35543b85c7c
214 Risk Score

Malware Insights

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

The PDF file contains a lure impersonating a cloud document sharing service, specifically mentioning "remove dropbox from mac". It embeds a large number of external links, many of which point to PDF files hosted on Shopify. The primary malicious indicator is the link to `https://ttraff.ru/pify?keyword=remove+dropbox+from+mac`, which is identified as a known malicious redirector. This suggests the document is designed to trick users into clicking malicious links, likely leading to further compromise.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Cloud document impersonation lure medium SE_CLOUD_DOC_LURE
    Document impersonates a cloud file-sharing service such as SharePoint, OneDrive, Google Drive, Dropbox, Box, or Microsoft 365 and asks the user to open, verify, or access a shared document
  • 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.ru/pify?keyword=remove+dropbox+from+mac In PDF document text
    • http://files.fresnonutritionsolutions.com/uploads/1/3/2/6/132683111/9806049.pdfIn PDF document text
    • http://files.houndaway.com/uploads/1/3/2/7/132740296/c20f661c2.pdfIn PDF document text
    • http://files.ciomentor.com/uploads/1/3/1/1/131163898/wedaler_jixevigigukobil.pdfIn PDF document text
    • http://files.theworldofmcewan.com/uploads/1/3/0/7/130738814/gibaja_tawix_wododibura_musimetal.pdfIn PDF document text
    • http://files.alisonrothman.com/uploads/1/3/1/4/131482953/f8cff.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/1/0427/7328/2983/files/fipatezibujewusidibajipo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6346/6391/files/53232001341.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9276/0994/files/44842799465.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1517/5335/files/amd_dual_core_optimizer.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7180/7391/files/girufisodixarasadesik.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8495/5300/files/xoluvurizuwapimufej.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7139/6257/files/21527425744.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7742/5559/files/zazanafekezowimanilodizek.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8116/3157/files/kasezonoluzi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0659/0106/files/tiwuteguzov.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4227/5485/files/votakafuvizadufanix.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_off00006c07.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C07 5368 bytes
SHA-256: cb7dfa157f14ae4902db833541d4d24ab2162d38ecd144505c8fa54e4c004e57
font_01_sfnt_off00007e3f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7E3F 14132 bytes
SHA-256: d281280040f2e683cf9caec572d1c693617c3900356d35c2c9daeaa398cd1747