Malicious PDF — malware analysis report

Static analysis result for SHA-256 94679c7628e68b98…

MALICIOUS

PDF

41.2 KB Created: 2020-08-03 15:51:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9dc2fb565e8d24c48ff4a4cdb0a8812c SHA-1: f919c8d8c68af826a612b72b83cba6de76698b8a SHA-256: 94679c7628e68b986ed4588747138224881e335c2096775c3edf0eb90a481967
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link T1059.001 PowerShell

This PDF file contains a lure for a 'computer networking tutorial' which, upon clicking, redirects to a malicious URL. The document also contains a mass external PDF link farm, indicating an attempt to manipulate search engine results or distribute further malicious content. The presence of a remote-support tool lure suggests a potential secondary objective of gaining unauthorized access.

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.
  • Remote-support tool lure high SE_REMOTE_SUPPORT_LURE
    Document instructs the user to install, open, or connect with a remote-support tool such as AnyDesk, TeamViewer, Quick Assist, or ScreenConnect — high-risk in an unsolicited document
  • 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=computer+networking+tutorial+pdf+free+download
    • http://files.alycewolfe.com/uploads/1/3/1/3/131381677/nidimipapireji_pefobawavu.pdf
    • http://files.arlingtonmsband.com/uploads/1/3/1/6/131606087/ddee7.pdf
    • http://files.lakappas.com/uploads/1/3/1/3/131380627/babf9c37c6ee9.pdf
    • http://files.thepurposedathlete.com/uploads/1/3/1/4/131438330/1676827.pdf
    • http://files.mackcommunications.com/uploads/1/3/2/6/132681054/66f99.pdf
    • https://cdn.shopify.com/s/files/1/0437/4649/2565/files/72556620795.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/wefudebavisizaku.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/gofusibosaduxigagixuvoma.pdf
    • https://cdn.shopify.com/s/files/1/0437/2656/9633/files/too_much_tnt_mod_1._7_10.pdf
    • https://cdn.shopify.com/s/files/1/0433/1415/1589/files/73145117200.pdf
    • https://cdn.shopify.com/s/files/1/0436/0513/1421/files/ato_mix_virtual_dj.pdf
    • https://cdn.shopify.com/s/files/1/0434/4732/0728/files/8349886241.pdf
    • https://cdn.shopify.com/s/files/1/0434/3804/7384/files/32721094607.pdf
    • https://cdn.shopify.com/s/files/1/0434/7153/6294/files/sesumilolenazogapeno.pdf
    • https://cdn.shopify.com/s/files/1/0432/7905/7056/files/23610391261.pdf
    • https://cdn.shopify.com/s/files/1/0435/3127/2351/files/90358162357.pdf
    • https://cdn.shopify.com/s/files/1/0434/5298/9605/files/donasamonopuzovepif.pdf
    • https://cdn.shopify.com/s/files/1/0431/3173/2132/files/83105890651.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_off00006314.bin
8a85408a468d3963a2b49a10979c2bc308859f726502e5f573fedd4bc9678320
pdf-font-stream PDF embedded font (sfnt) at offset 0x6314 5244 bytes
font_01_sfnt_off000074e8.bin
345219abc32de70c53d7bd6f8fa5212d0cc9903fd0ef92aa96a12f8f5bc6d1f4
pdf-font-stream PDF embedded font (sfnt) at offset 0x74E8 10084 bytes