Malicious PDF — malware analysis report

Static analysis result for SHA-256 3e90fbe3c5f5bd8d…

MALICIOUS

PDF

44.8 KB Created: 2020-08-29 13:01:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d5f2e106f62b1aefaa591bf055c685ee SHA-1: fe176a922f874777bce80768779d19f1e3e969f2 SHA-256: 3e90fbe3c5f5bd8d23bc843635cf8a1b414a2125fb3eb1220f3423d9691c9030
154 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many pointing to external PDF files hosted on Shopify. One of these links, 'https://ttraff.com/wix?keyword=2002+honda+civic+factory+service+manual', is flagged as a malicious redirector. This suggests the document is part of a link farm or SEO manipulation scheme, potentially leading users to malicious sites or content.

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/wix?keyword=2002+honda+civic+factory+service+manual
    • https://cdn.shopify.com/s/files/1/0430/8638/1210/files/subet.pdf
    • https://cdn.shopify.com/s/files/1/0437/1582/1717/files/23357764982.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/42632515291.pdf
    • https://cdn.shopify.com/s/files/1/0433/4151/2855/files/hoover_integrated_washing_machine_door_template.pdf
    • https://cdn.shopify.com/s/files/1/0432/5959/2864/files/3332571339.pdf
    • https://static.usrfiles.com/ugd/b8c837_cbda758230b241de9036bcb26d05e40c.pdf
    • https://static.usrfiles.com/ugd/b8c837_4eaf1a20726649a9819615d39b2de5e6.pdf
    • https://static.usrfiles.com/ugd/b8c837_8089be3df47d4945b5b6ba07f7465d95.pdf
    • https://static.usrfiles.com/ugd/89363e_d234f71f61514248bcb10cc316d8063e.pdf
    • https://static.usrfiles.com/ugd/b8c837_93bbb5a4e2e84c6c834384fa4fe67fc7.pdf
    • https://static.usrfiles.com/ugd/b8c837_edd33d551f4f421bb0b5ca9025c349b7.pdf
    • https://static.usrfiles.com/ugd/b8c837_ffcab909836f4f569240b4f477341320.pdf
    • https://cdn.shopify.com/s/files/1/0437/3191/0821/files/52491481419.pdf
    • https://cdn.shopify.com/s/files/1/0433/5969/9109/files/bafexif.pdf
    • https://cdn.shopify.com/s/files/1/0436/2112/2211/files/33471745190.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_off0000702f.bin
036aa87ba044fa6665695c4f83db83b6fc01be5f304ae34b7f969252dd02e91b
pdf-font-stream PDF embedded font (sfnt) at offset 0x702F 5604 bytes
font_01_sfnt_off0000830c.bin
2a158464e7b1e4a899cff3e34fdc8f086dec580c7344c5524f628949c13e1541
pdf-font-stream PDF embedded font (sfnt) at offset 0x830C 10232 bytes