Malicious PDF — malware analysis report

Static analysis result for SHA-256 cd86db6a42aa0733…

MALICIOUS

PDF

63.4 KB Created: 2020-08-24 15:47:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d982938f5a4d7ca435ae2a167e43e5a1 SHA-1: 1bd3bf4b38a7321b975f206d811836d5e92ad88c SHA-256: cd86db6a42aa07334810b76cde4c0bc328731a469cf370317952c5462e397e1b
168 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link disguised as a download lure, directing users to 'https://ttraff.com/pify?keyword=macbook+android+studio+adb'. It also features a large number of embedded links, many pointing to Shopify domains, suggesting an attempt to create a link farm for SEO poisoning or to obscure the malicious redirector. The presence of a 'password-protected archive handoff' lure indicates a common tactic to bypass security filters by requiring a password for an attachment, which is likely provided separately.

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.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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=macbook+android+studio+adb
    • http://files.dynamicactor.com/uploads/1/3/2/8/132814241/nupujiditixupo.pdf
    • http://files.tacticaltorture.com/uploads/1/3/0/7/130738821/035a8d8ac.pdf
    • http://files.julielangegroth.com/uploads/1/3/1/6/131606537/tijudo.pdf
    • https://cdn.shopify.com/s/files/1/0435/2360/4631/files/ruwijoziwizawop.pdf
    • https://cdn.shopify.com/s/files/1/0435/6594/0904/files/vupusekelozowavowoguxuson.pdf
    • https://cdn.shopify.com/s/files/1/0429/7503/5541/files/accidents_reported_today_colorado.pdf
    • https://cdn.shopify.com/s/files/1/0441/2289/8584/files/sims_4_mac_torrent.pdf
    • https://cdn.shopify.com/s/files/1/0430/0144/6551/files/campbells_biology.pdf
    • https://cdn.shopify.com/s/files/1/0428/9308/2783/files/psychological_suspense_thriller_books.pdf
    • https://cdn.shopify.com/s/files/1/0429/8568/5153/files/93765779353.pdf
    • https://cdn.shopify.com/s/files/1/0437/3967/6821/files/el_capitalismo_salvaje.pdf
    • https://cdn.shopify.com/s/files/1/0437/1123/4197/files/madigagizanudejomibam.pdf
    • https://cdn.shopify.com/s/files/1/0430/6056/0021/files/2124321592.pdf
    • https://cdn.shopify.com/s/files/1/0433/0287/9387/files/gexopuvugefonusamukijola.pdf
    • https://cdn.shopify.com/s/files/1/0428/3590/2631/files/pressure_ulcer_stages.pdf
    • https://cdn.shopify.com/s/files/1/0434/0950/6471/files/23021796374.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_off0000ba2d.bin
677c3910cb939ba4bb28515f47c34bf606d75c530c502a6518eabdc6458b0d39		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBA2D 5108 bytes
font_01_sfnt_off0000cb98.bin
aa99bc954637dc5e45433888aff3f42b00503be643a02a7154af86013700efd0		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCB98 10912 bytes

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