Malicious PDF — malware analysis report

Static analysis result for SHA-256 bbeca664a4cfbeae…

MALICIOUS

PDF

41.5 KB Created: 2020-08-25 06:38:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 43d9eceaa212b286d1d9bc5aa9ea0fc3 SHA-1: d77d9ff19cf11a25d25cfb6770e424379a7d6c37 SHA-256: bbeca664a4cfbeaeed218d8f53c7ba31289aeca0af6caf2ffa9f7fe460e0aa1b
120 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with a critical heuristic identifying a malicious redirector at 'https://ttraff.com/pify?keyword=video+background+eraser+apk'. The document body, though heavily obfuscated, contains references to this URL and appears to be a lure related to a 'video background eraser apk'. The presence of a link farm suggests an attempt to manipulate search engine results or distribute malicious content broadly. No scripts were extracted, limiting the analysis of direct execution capabilities.

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=video+background+eraser+apk
    • http://ritegomep.humanitiesforwisdom.org/uploads/1/3/1/4/131406515/bexefufap.pdf
    • http://ruwal.dentsdoodles.org/uploads/1/3/1/4/131406801/pifepajuf_xigejujigij.pdf
    • http://files.thecostaricakid.com/uploads/1/3/0/8/130873708/vasokivexi.pdf
    • http://vonoseluk.johnsonvilleheritagefestival.com/uploads/1/3/1/6/131606552/baxikekeladok.pdf
    • http://files.menomineewatershed.com/uploads/1/3/1/4/131453950/rugewoxiwumerafokura.pdf
    • https://cdn.shopify.com/s/files/1/0432/5743/0176/files/10580608795.pdf
    • https://cdn.shopify.com/s/files/1/0432/5241/6672/files/letiboniforuputekiwutoni.pdf
    • https://cdn.shopify.com/s/files/1/0434/1471/6572/files/acheron_dark_hunter.pdf
    • https://cdn.shopify.com/s/files/1/0430/4489/6917/files/github_pull_most_recent.pdf
    • https://cdn.shopify.com/s/files/1/0438/0783/4272/files/.pdf
    • https://cdn.shopify.com/s/files/1/0449/8921/8984/files/90992402773.pdf
    • https://cdn.shopify.com/s/files/1/0445/3695/5044/files/rudram_sanskrit_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0431/4651/0497/files/lutune.pdf
    • https://cdn.shopify.com/s/files/1/0435/0931/7787/files/descargar_libros_de_apologetica_cristiana_en.pdf
    • https://cdn.shopify.com/s/files/1/0438/1641/9488/files/xujudamusube.pdf
    • https://cdn.shopify.com/s/files/1/0460/1407/0945/files/brotherhood_of_steel_uniform_black.pdf
    • https://cdn.shopify.com/s/files/1/0436/6372/0613/files/retencion_restos_placentarios.pdf
    • https://cdn.shopify.com/s/files/1/0441/1061/0584/files/39227082065.pdf
    • https://cdn.shopify.com/s/files/1/0436/2128/6050/files/dubor.pdf
    • https://cdn.shopify.com/s/files/1/0429/2440/8988/files/aashto_lrfd_bridge_specifications.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_off000056db.bin
ea7a60f7fe2aebf89dcbe7dfb2fb73e1ec022a6d7a251f0b375b43c9ba740571		 pdf-font-stream PDF embedded font (sfnt) at offset 0x56DB 5180 bytes
font_01_sfnt_off0000687a.bin
1982f44a58f7d98fe7ee8337dee538eba2115b5dc20eaea5a93585c0675183fc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x687A 10052 bytes
font_02_sfnt_off00008ad6.bin
b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8AD6 4324 bytes

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