Malicious PDF — malware analysis report

Static analysis result for SHA-256 dd641060ee2b08e9…

MALICIOUS

PDF

45.5 KB Created: 2020-08-08 01:09:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bfee7c2c2c9c633189b82fc17f02cb0a SHA-1: e91737b806e8969b74276419e97552468a907980 SHA-256: dd641060ee2b08e97cd5f18ea4563e66ca64c3e5b344780af199a028bdf00df0
168 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link disguised as a download for 'german to english books for beginners pdf'. It also presents a remote support lure, instructing the user to install or connect with a remote support tool. The primary malicious URL identified is ttraff.com, which is known for redirecting to malicious infrastructure.

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.
  • 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
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=german+to+english+books+for+beginners+pdf
    • http://files.olivetcongregational.org/uploads/1/3/0/8/130813357/c6d6c23c3272ea.pdf
    • http://files.thedigitaltheologian.com/uploads/1/3/1/8/131856285/e4cb57d81f.pdf
    • http://files.sipbycoolingsociety.com/uploads/1/3/1/3/131383924/toxisexunolozep.pdf
    • http://files.plaisanceenglishsetters.com/uploads/1/3/0/8/130874231/jasedimajem.pdf
    • http://files.pineridgereconciliationcenter.org/uploads/1/3/1/4/131437626/4139082.pdf
    • https://cdn.shopify.com/s/files/1/0428/2292/6492/files/lineare_gleichungen_lsen_bungen.pdf
    • https://cdn.shopify.com/s/files/1/0431/7052/9436/files/daxase.pdf
    • https://cdn.shopify.com/s/files/1/0435/5211/2804/files/93619239828.pdf
    • https://cdn.shopify.com/s/files/1/0430/9434/3841/files/scope_of_business_management.pdf
    • https://cdn.shopify.com/s/files/1/0430/2995/4721/files/93133114028.pdf
    • https://cdn.shopify.com/s/files/1/0437/0271/4533/files/jivufudev.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/1317992411.pdf
    • https://cdn.shopify.com/s/files/1/0430/8307/1650/files/6360047859.pdf
    • https://cdn.shopify.com/s/files/1/0429/8201/5129/files/79656769530.pdf
    • https://cdn.shopify.com/s/files/1/0430/0098/7811/files/author_s_purpose_worksheets_4th_grade.pdf
    • https://cdn.shopify.com/s/files/1/0431/4028/4583/files/32908491940.pdf
    • https://cdn.shopify.com/s/files/1/0429/6884/2393/files/97286744525.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_off000071d3.bin
239594a15b87050d1e27988e449c3f54a28b4117f41e2e7037829071d9c98a0d
pdf-font-stream PDF embedded font (sfnt) at offset 0x71D3 5692 bytes
font_01_sfnt_off000084fc.bin
9a002338f95f58dfe38b82b76748bb3c082714c51d77fe9747590ecb98dc2458
pdf-font-stream PDF embedded font (sfnt) at offset 0x84FC 10508 bytes