Malicious PDF — malware analysis report

Static analysis result for SHA-256 ce0214a920389094…

MALICIOUS

PDF

48.5 KB Created: 2020-08-14 03:23:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9fb16d7034cd4036ca3a34cb3e281a6c SHA-1: a85ae989944469a6b7092a7824424a5bc820241f SHA-256: ce0214a9203890948dae64be5153a014fd8c8405b295d887e6eed5642c4f808f
150 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic firing for a malicious redirector. The primary malicious URL, 'https://ttraff.ru/pify?keyword=picsay+pro+apk+old+version+free', is likely used to redirect users to further malicious content or phishing pages. The document body, though heavily obfuscated, contains references to this URL and other Shopify-hosted PDFs, suggesting a link farm or SEO poisoning tactic to distribute malware. The ML classifier also strongly indicated maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.ru/pify?keyword=picsay+pro+apk+old+version+free
    • http://files.rq3llc.com/uploads/1/3/2/7/132712040/e45efb931cf.pdf
    • http://mupiwus.waipapalandscapesupplies.com/uploads/1/3/1/3/131380485/tovojadarewogunoti.pdf
    • http://files.killianfoundation.org/uploads/1/3/1/6/131637137/gamokiwaz_watibiwabab_jugij.pdf
    • https://cdn.shopify.com/s/files/1/0432/8561/0654/files/sogeze.pdf
    • https://cdn.shopify.com/s/files/1/0432/4923/8178/files/23957356565.pdf
    • https://cdn.shopify.com/s/files/1/0437/1880/3605/files/18978999056.pdf
    • https://cdn.shopify.com/s/files/1/0439/2042/5115/files/73785438766.pdf
    • https://cdn.shopify.com/s/files/1/0431/0673/0138/files/80607128406.pdf
    • https://cdn.shopify.com/s/files/1/0434/4119/3110/files/tamakagibabibofal.pdf
    • https://cdn.shopify.com/s/files/1/0431/5653/7493/files/5685337966.pdf
    • https://cdn.shopify.com/s/files/1/0438/3476/9565/files/botany_practical_notes.pdf
    • https://cdn.shopify.com/s/files/1/0434/8634/7414/files/ipad_pro_user_guide.pdf
    • https://cdn.shopify.com/s/files/1/0435/8343/9003/files/15_sec_timer.pdf
    • https://cdn.shopify.com/s/files/1/0431/9110/7742/files/animal_description_worksheets.pdf
    • https://cdn.shopify.com/s/files/1/0429/2483/4975/files/nopep.pdf
    • https://cdn.shopify.com/s/files/1/0429/7208/6435/files/gipaduviz.pdf
    • https://cdn.shopify.com/s/files/1/0430/8343/2096/files/muvazoburejodibenamika.pdf
    • https://cdn.shopify.com/s/files/1/0433/5727/4270/files/fortune_1_minecraft.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000068ab.bin
4777c469941f6d98a45061c2dac1ece38db03ec660dd7ecadd69327c9415a6f1
pdf-font-stream PDF embedded font (sfnt) at offset 0x68AB 5376 bytes
font_01_sfnt_off00007b0f.bin
9c4b497d1187c11822be5f263c6c11888cf522fc7222a49166cb4a7925331476
pdf-font-stream PDF embedded font (sfnt) at offset 0x7B0F 10636 bytes
font_02_sfnt_off00009f7d.bin
9c09c3f45a19043a702cc6be33398a21107241dbefe2e5fcbbd9a22724e33f3d
pdf-font-stream PDF embedded font (sfnt) at offset 0x9F7D 16124 bytes