Malicious PDF — malware analysis report

Static analysis result for SHA-256 6a710f74c439191f…

MALICIOUS

PDF

44.7 KB Created: 2020-08-06 02:12:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: cb0a452f63ec6cf633e67d9b9b3cc2b4 SHA-1: d45c7eaa560505666e793a53360ecc5fb2f5ac86 SHA-256: 6a710f74c439191fb40bf362a5ad63625f7a0a8f95f3b2eaf243f603f9d68701
174 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document impersonates a cloud document lure, aiming to trick users into clicking embedded links. The primary malicious link, 'https://ttraff.com/pify?keyword=bookmark+pdf+onedrive+ipad', is identified as a redirector to malicious infrastructure. The document also contains a large number of links to other PDFs hosted on Shopify, suggesting a link farm or SEO poisoning tactic. No scripts were extracted, but the presence of malicious links and the impersonation lure strongly indicate a phishing or malware distribution attempt.

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.
  • 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.com/pify?keyword=bookmark+pdf+onedrive+ipad
    • http://files.ministryinmedicine.com/uploads/1/3/0/7/130739704/dc3e8.pdf
    • http://files.travelsofteens.com/uploads/1/3/0/7/130738993/koporolejorono-podib-muroj.pdf
    • http://files.scotsresearch.org/uploads/1/3/0/7/130775292/5f86d4.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0432/9370/4356/files/diwelilobu.pdf
    • https://cdn.shopify.com/s/files/1/0430/1520/9123/files/50701776303.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/rapuz.pdf
    • https://cdn.shopify.com/s/files/1/0439/7318/1598/files/dazegakuruxivugaw.pdf
    • https://cdn.shopify.com/s/files/1/0438/1035/7405/files/49531683048.pdf
    • http://mawadij.cdlynn.people.ua.edu/uploads/1/3/2/7/132710712/bogagosodip-vejin.pdf
    • https://cdn.shopify.com/s/files/1/0432/9875/0629/files/tigagitutep.pdf
    • https://cdn.shopify.com/s/files/1/0434/6154/2054/files/minecraft_superheroes_server.pdf
    • https://cdn.shopify.com/s/files/1/0428/3082/3583/files/24168776517.pdf
    • https://cdn.shopify.com/s/files/1/0434/1379/9064/files/99619972678.pdf
    • https://cdn.shopify.com/s/files/1/0431/1249/7312/files/20833892051.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/mijafovaginidobu.pdf
    • https://cdn.shopify.com/s/files/1/0436/8538/0246/files/jabesinuv.pdf
    • https://cdn.shopify.com/s/files/1/0431/8055/6452/files/fobow.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006217.bin
4719bb10a5ac9b08fa8e7fec01d272336a5d0fd92e002823a79002421beb6f25		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6217 4856 bytes
font_01_sfnt_off00007282.bin
be6357746ce31fd9a2a0fbb88c1f6e5d480f6bca1c1ca0727231bfa4bbf45ed5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7282 10944 bytes
font_02_sfnt_off000097cc.bin
d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378		 pdf-font-stream PDF embedded font (sfnt) at offset 0x97CC 4324 bytes

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