Malicious PDF — malware analysis report

Static analysis result for SHA-256 dc0f3fcb71bbc975…

MALICIOUS

PDF

77.5 KB Created: 2020-08-22 23:32:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 30838e61d6aef3a8da2f141d913bed70 SHA-1: 66cf5e5c68b819a14db9de37f6d4e7839d1ad910 SHA-256: dc0f3fcb71bbc975ae1e03b0ce898948b747e5999ef2e77bee224e053c4118e1
142 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link pointing to 'https://ttraff.com/pify?keyword=java+8+update+191+64+bit', disguised as a Java update. It also features a link farm with numerous PDFs hosted on Shopify, likely for SEO poisoning. The document body, though heavily obfuscated, contains text related to 'Java 8 update 191 64 bit' and the authoring application 'wkhtmltopdf', reinforcing the lure. The presence of a callback phishing lure heuristic further suggests a social engineering attempt.

Heuristics 4

  • 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns
  • 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=java+8+update+191+64+bit
    • http://files.fumcsaranaclake.org/uploads/1/3/1/8/131857540/8887822.pdf
    • http://furevojo.venturissolutions.net/uploads/1/3/2/6/132682883/wefabesumu-kowikofewot-pugegudoxafopux.pdf
    • http://vapigupi.saintgregorysileby.org/uploads/1/3/1/3/131380934/kotebogisarisaf-folijoma-rojugizaj.pdf
    • https://cdn.shopify.com/s/files/1/0445/6172/7647/files/exalted_cheat_sheet.pdf
    • https://cdn.shopify.com/s/files/1/0435/3690/8439/files/51088875766.pdf
    • https://cdn.shopify.com/s/files/1/0437/6847/9893/files/jonalokupolifogexudena.pdf
    • https://cdn.shopify.com/s/files/1/0439/4965/4184/files/bandsaw_blade_guides_reviews.pdf
    • https://cdn.shopify.com/s/files/1/0431/4939/4080/files/ardas_kran_song.pdf
    • https://cdn.shopify.com/s/files/1/0432/3901/4562/files/oh_baby_telugu_movie_video_songs.pdf
    • https://cdn.shopify.com/s/files/1/0439/5175/1336/files/william_shakespeare_romeo_and_juliet.pdf
    • https://cdn.shopify.com/s/files/1/0429/2096/8358/files/pdf_chakras_for_beginners.pdf
    • https://cdn.shopify.com/s/files/1/0427/5542/4423/files/moxeronositexofegiwono.pdf
    • https://cdn.shopify.com/s/files/1/0429/5422/7871/files/best_search_by_image_app_for_android.pdf
    • https://cdn.shopify.com/s/files/1/0434/8153/0534/files/zivumovomipiso.pdf
    • https://cdn.shopify.com/s/files/1/0432/2626/7816/files/xijejelizifujoxel.pdf
    • https://cdn.shopify.com/s/files/1/0429/8221/1735/files/51528845490.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_off0000e9fc.bin
c9a2a15d0f77bb9cb2f1fbcf6c76fbfcfa6b83a7ce45e286203f4b8acb3d5082
pdf-font-stream PDF embedded font (sfnt) at offset 0xE9FC 5480 bytes
font_01_sfnt_off0000fcb4.bin
75d35ca83f241c8d7d30b745ee61ea6620dbde6009a790fa4f1288377885c4ae
pdf-font-stream PDF embedded font (sfnt) at offset 0xFCB4 13600 bytes