Malicious PDF — malware analysis report

Static analysis result for SHA-256 2508343be64f490d…

MALICIOUS

PDF

41.7 KB Created: 2020-08-10 06:33:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: fa171e2fc8e1f8570ef5bb0d0d7287e7 SHA-1: d70d1fc41892cb39cc37fac95d6f0087d0591a4b SHA-256: 2508343be64f490dbcf539d0055b8a2a07fad29c0f7fe2ce50e0cfef6f0ab250
152 Risk Score

Malware Insights

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

The PDF document contains a lure referencing a "Burger King SA menu PDF" and embeds a large number of external links. One of these links, https://ttraff.com/pify?keyword=burger+king+sa+menu+pdf, is identified as a malicious redirector. The document's structure and link farm suggest a phishing or redirection attempt to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • 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=burger+king+sa+menu+pdf
    • http://files.southernmainewritingproject.com/uploads/1/3/0/7/130776864/2a998e1f8a46004.pdf
    • http://files.lindenhillimports.com/uploads/1/3/1/3/131383514/mafeton.pdf
    • http://zalozobe.eatyourheartoutsd.com/uploads/1/3/1/3/131384281/1fa57e10967438d.pdf
    • http://files.memortazavi.com/uploads/1/3/1/0/131070389/a5b2ace.pdf
    • https://cdn.shopify.com/s/files/1/0434/4093/0968/files/soziwo.pdf
    • https://cdn.shopify.com/s/files/1/0432/6840/7464/files/86445495004.pdf
    • https://cdn.shopify.com/s/files/1/0432/5395/6766/files/1143008533.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/84593422723.pdf
    • https://cdn.shopify.com/s/files/1/0432/7066/8453/files/dogeboburejirazisosazamo.pdf
    • https://cdn.shopify.com/s/files/1/0431/2452/3169/files/71781068468.pdf
    • https://cdn.shopify.com/s/files/1/0433/6785/8334/files/thomas_calculus_11th_edition_solution_full_book.pdf
    • https://cdn.shopify.com/s/files/1/0430/0403/5221/files/wufunava.pdf
    • https://cdn.shopify.com/s/files/1/0437/9174/5175/files/60522862880.pdf
    • https://cdn.shopify.com/s/files/1/0428/4396/3559/files/django_delete_object.pdf
    • https://cdn.shopify.com/s/files/1/0428/9993/1295/files/wotebodewibuguf.pdf
    • https://cdn.shopify.com/s/files/1/0433/4649/3605/files/31423368651.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/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000606e.bin
a3b61c0fc85708a6090293b9407b231fd67c5664c4e790ddd96372bb2d473a9c
pdf-font-stream PDF embedded font (sfnt) at offset 0x606E 5440 bytes
font_01_sfnt_off000072e5.bin
03c37bd76687f27904b40f9ff9656cfea18f971e05aef4c80ba85226f9b3b0c9
pdf-font-stream PDF embedded font (sfnt) at offset 0x72E5 11224 bytes