Malicious PDF — malware analysis report

Static analysis result for SHA-256 f7c536875ff11639…

MALICIOUS

PDF

51.0 KB Created: 2020-08-23 03:58:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bdb70e33592f9db86a2917e4274f0977 SHA-1: a50daa6a1e247fe8d40e3bce0d6e0a32db4c6f90 SHA-256: f7c536875ff11639e0eb894ef139beb109284e1287031bac2b729eeebf76d4d4
150 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with a primary link pointing to a known malicious redirector. The document body, though corrupted, suggests a lure related to 'causes of global warming in points pdf'. The ML classifier strongly indicates maliciousness. The primary malicious IOC is the redirector URL, which likely serves as a gateway to further malicious content.

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.cc/pify?keyword=causes+of+global+warming+in+points+pdf
    • http://pajuzoful.readimun.org/uploads/1/3/1/6/131606156/reduguze-bofufazekasa-fedezoxovusunid.pdf
    • http://files.eletesegeszseg.com/uploads/1/3/2/6/132681343/8982324.pdf
    • http://migos.3dtopnotch.com/uploads/1/3/1/4/131437464/9925099.pdf
    • http://takug.riveracorps.com/uploads/1/3/1/8/131871486/xekimaje_gixipuserawaj.pdf
    • http://files.myped15.com/uploads/1/3/1/4/131437249/xaziwoner_fezomabazadis.pdf
    • https://cdn.shopify.com/s/files/1/0435/7164/2527/files/7114195416.pdf
    • https://cdn.shopify.com/s/files/1/0437/7988/3170/files/sakizarozodepizemebuvu.pdf
    • https://cdn.shopify.com/s/files/1/0430/6688/4250/files/24188104580.pdf
    • https://cdn.shopify.com/s/files/1/0434/6390/1348/files/conditional_in_reported_speech.pdf
    • https://cdn.shopify.com/s/files/1/0438/0190/3264/files/debit_credit_balance_sheet_excel.pdf
    • https://cdn.shopify.com/s/files/1/0431/6718/7108/files/pewuxus.pdf
    • https://cdn.shopify.com/s/files/1/0430/5158/1597/files/fuzeweme.pdf
    • https://cdn.shopify.com/s/files/1/0434/7772/9430/files/99_names_of_allah_with_meaning_in_malayalam.pdf
    • https://cdn.shopify.com/s/files/1/0434/7900/7398/files/pinterest_share_url.pdf
    • https://cdn.shopify.com/s/files/1/0431/2553/8980/files/49424026785.pdf
    • https://cdn.shopify.com/s/files/1/0432/6260/7520/files/ropotugarexidelavone.pdf
    • https://cdn.shopify.com/s/files/1/0431/4349/5841/files/kalonirajipupozifepel.pdf
    • https://cdn.shopify.com/s/files/1/0461/8289/1673/files/tigiteturor.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_off000088f6.bin
03ca026a65af77fa40a62b10a1931df8490f93e7c4b3f4fa10265b1e6f3e90b6
pdf-font-stream PDF embedded font (sfnt) at offset 0x88F6 5500 bytes
font_01_sfnt_off00009b9c.bin
46cb3842a1d6655d8f4b544bd6e8d860426703556db118627f86188f85576a8a
pdf-font-stream PDF embedded font (sfnt) at offset 0x9B9C 10256 bytes