Malicious PDF — malware analysis report

Static analysis result for SHA-256 41958b9648195602…

MALICIOUS

PDF

41.8 KB Created: 2020-08-10 04:58:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 743d20ec2f50fddf3b3f4c145eac79ef SHA-1: 259ffc3e9b05482721515f3f217f168a8f3b9fa3 SHA-256: 41958b9648195602546ab92bc9cbce7a1bc2b5eddf240027329ce3d2b5433eb8
120 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.com/pify?keyword=baby+shower+gift+list+pdf'. This URL is presented within the document body, disguised as a 'baby shower gift list pdf'. The document also exhibits characteristics of a link farm, with numerous embedded links to Shopify-hosted PDFs, likely to improve search engine ranking for malicious lures. The primary malicious IOC is the ttraff.com redirector.

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=baby+shower+gift+list+pdf
    • http://files.bambooartscenter.com/uploads/1/3/1/8/131857071/pujeriwetid-napofemerumaw.pdf
    • http://files.georgiewoodeventing.com/uploads/1/3/1/4/131409037/gosomenezosejeko.pdf
    • http://files.eugeneosborne.com/uploads/1/3/0/8/130873822/jowetori.pdf
    • http://napiges.alanajaneskincare.com/uploads/1/3/1/0/131069839/xujivofuxojixadukes.pdf
    • http://files.geyserlandcatclub.co.nz/uploads/1/3/2/6/132681891/5f603a897.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/ginowojero.pdf
    • https://cdn.shopify.com/s/files/1/0432/7273/2836/files/mugum.pdf
    • https://cdn.shopify.com/s/files/1/0431/0240/4769/files/bofofepudapet.pdf
    • https://cdn.shopify.com/s/files/1/0440/7810/4728/files/biology_notes_form_4_chapter_2.pdf
    • https://cdn.shopify.com/s/files/1/0428/6332/9446/files/rodamepak.pdf
    • https://cdn.shopify.com/s/files/1/0434/7969/5517/files/water_supply_and_sanitary_engineering_by_rangwala.pdf
    • https://cdn.shopify.com/s/files/1/0428/2561/3475/files/nojirulimurozox.pdf
    • https://cdn.shopify.com/s/files/1/0436/0844/0990/files/17132854783.pdf
    • https://cdn.shopify.com/s/files/1/0430/7006/2754/files/sogojoxosug.pdf
    • https://cdn.shopify.com/s/files/1/0432/3953/8851/files/71704785636.pdf
    • https://cdn.shopify.com/s/files/1/0430/3729/4741/files/35718054694.pdf
    • https://cdn.shopify.com/s/files/1/0433/3201/0152/files/branches_of_psychology_and_their_definition.pdf
    • https://cdn.shopify.com/s/files/1/0427/4877/2519/files/74968402346.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/
    • https://cdn.shopify.com/s/files/1/0430/3729/4741/files/3571805469

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006432.bin
fd0a42b9ed07814cd1cb79884f0c3b36df476691c0dfd4e31bb15be11d34c63e
pdf-font-stream PDF embedded font (sfnt) at offset 0x6432 5688 bytes
font_01_sfnt_off0000779f.bin
9782d3555b947f8aab303b300a5cb359347b6659e1c5d81f865fe0b9af9a0f2b
pdf-font-stream PDF embedded font (sfnt) at offset 0x779F 10228 bytes