Malicious PDF — malware analysis report

Static analysis result for SHA-256 adec3924bdc736da…

MALICIOUS

PDF

83.4 KB Created: 2020-09-04 19:01:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 826a24c38e02a79197c7bb2e63ec611a SHA-1: 1522ddd4e2de474ce212fd66e63ce893b762cef8 SHA-256: adec3924bdc736daaec100049f8fc5cc6f7117bfa9b301bdcfc6287c3226e990
120 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link pointing to 'https://ttraff.com/pify?keyword=growstone+equipment+guide'. It also contains a PDF link farm heuristic, indicating a large number of outbound links. The document body, though heavily obfuscated, contains the same URL, suggesting the primary intent is to redirect the user to malicious infrastructure.

Heuristics 3

  • 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.
  • 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=growstone+equipment+guide
    • https://cdn.shopify.com/s/files/1/0433/4547/7783/files/42824822460.pdf
    • https://cdn.shopify.com/s/files/1/0429/8627/4977/files/apologia_de_socrates_platn.pdf
    • https://cdn.shopify.com/s/files/1/0437/2532/4439/files/artificial_intelligence_course_books.pdf
    • https://static.usrfiles.com/ugd/d6af85_8ff9917eabd6468c9d77013084e077bf.pdf
    • https://static.usrfiles.com/ugd/eb4c03_1041bd6194bb4839bc4d2988ee8058f9.pdf
    • https://static.usrfiles.com/ugd/911c12_b8d673a4bb464f519e06ef96508f9492.pdf
    • https://static.usrfiles.com/ugd/b8c837_dfe1d7760b8645cd8075260c6caec18d.pdf
    • https://cdn.shopify.com/s/files/1/0430/2631/7473/files/52040248851.pdf
    • https://cdn.shopify.com/s/files/1/0431/0515/7282/files/78244708007.pdf
    • https://cdn.shopify.com/s/files/1/0427/9091/2159/files/14636660658.pdf
    • https://cdn.shopify.com/s/files/1/0437/7886/7354/files/lucky_block_mod_1._7._10.pdf
    • https://cdn.shopify.com/s/files/1/0436/9724/2280/files/93611036506.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_off000104c2.bin
2a343a29c62be61ad1539802161f3c0b537a91041e402b2c793f13f3b07de62d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x104C2 5288 bytes
font_01_sfnt_off000116b6.bin
f56d4529d7434525349887f0461ea1d0543981968702d88a7bbe63cd5a5ff3d0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x116B6 12920 bytes

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