Malicious PDF — malware analysis report

Static analysis result for SHA-256 b425e606ed722768…

MALICIOUS

PDF

41.2 KB Created: 2020-08-19 21:25:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 243ebeb52ac6bb51b406239684cecbab SHA-1: be9d2dfe8a2095e446cab1fd61e6a3c276cae42d SHA-256: b425e606ed722768e4d73bf4b6a8c8937bd3913acf40b449cf659a37a618c8aa
130 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.cc/pify?keyword=counter+strike+go+apk+obb'. This URL is used in a lure to trick users into downloading potentially malicious content. The document also contains a large number of embedded links, many hosted on Shopify, which is indicative of a link farm used for SEO poisoning or distributing malware. The presence of a 'download button' lure further supports the malicious intent.

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=counter+strike+go+apk+obb
    • http://files.exclusivedancerecruitment.com/uploads/1/3/2/6/132681045/8214405.pdf
    • http://files.candiedtreatsatlanta.com/uploads/1/3/0/7/130775071/cc20e.pdf
    • http://files.congoprogress.org/uploads/1/3/1/4/131437680/jedulexaforimov.pdf
    • http://lovul.lotusranch-homes.com/uploads/1/3/1/4/131454215/savupuvesun-jorunazan-muwamanija.pdf
    • http://kanixop.megaplot.org/uploads/1/3/1/6/131606490/tavuzizutewelani.pdf
    • https://cdn.shopify.com/s/files/1/0431/5598/0445/files/51554343969.pdf
    • https://cdn.shopify.com/s/files/1/0430/5698/8317/files/reranil.pdf
    • https://cdn.shopify.com/s/files/1/0435/1187/3688/files/tafsir_zilal_al_quran.pdf
    • https://cdn.shopify.com/s/files/1/0437/1267/5995/files/25786598297.pdf
    • https://cdn.shopify.com/s/files/1/0429/0235/6124/files/oxford_advanced_learner_dictionary_12th_edition.pdf
    • https://cdn.shopify.com/s/files/1/0439/1596/8667/files/bupugix.pdf
    • https://cdn.shopify.com/s/files/1/0439/2953/4632/files/leveling_guide_destiny_2_forsaken.pdf
    • https://cdn.shopify.com/s/files/1/0440/5451/1766/files/uc_browser_online_movies.pdf
    • https://cdn.shopify.com/s/files/1/0436/4979/4213/files/pukizebujesuluvuwelosodi.pdf
    • https://cdn.shopify.com/s/files/1/0430/6731/0231/files/daratet.pdf
    • https://cdn.shopify.com/s/files/1/0434/1399/5672/files/fuvugup.pdf
    • https://cdn.shopify.com/s/files/1/0433/8017/9109/files/xevukiso.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_off0000637e.bin
ab28bb3c8ecd54aaf4ec4f8e994216479a78e98da4dd6853306e093fa3f7ae96
pdf-font-stream PDF embedded font (sfnt) at offset 0x637E 5064 bytes
font_01_sfnt_off000074c5.bin
f6bc58f932512125e7f6edb5b12db441d7aa146176791faaef52f0929dd05c58
pdf-font-stream PDF embedded font (sfnt) at offset 0x74C5 10220 bytes