Malicious PDF — malware analysis report

Static analysis result for SHA-256 da27fb708eef8c04…

MALICIOUS

PDF

62.1 KB Created: 2020-08-04 03:32:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 78177c633f75e3f8053c8565e001ffa0 SHA-1: 390fa86f65296b2e6a26ea0adbecf51dccc23513 SHA-256: da27fb708eef8c0442fdc5f08c4dc654329a1c11e674e89eba0e827db02577fb
120 Risk Score

Malware Insights

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

The PDF file was identified as malicious due to its inclusion of a large number of external links, a technique often used for SEO manipulation or to redirect users to malicious content. One of the primary links points to a known malicious redirector at 'ttraff.com'. While the document body contains text related to English phrases and PDF, it is likely a lure to disguise the malicious intent of the embedded links.

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=frases+mais+usadas+em+ingles+com+tradu%25C3%25A7%25C3%25A3o+em+portugues+pdf
    • http://files.annakeo.com/uploads/1/3/1/1/131164417/4c0637f699f9d0.pdf
    • http://files.gloriousseaglass.com/uploads/1/3/0/9/130969966/xokemolixilazuneluka.pdf
    • http://files.literarycats.com/uploads/1/3/0/8/130874264/3121f92e25bf.pdf
    • http://files.pereiraroshan.com/uploads/1/3/2/7/132740905/mivutejogexolej_kamar_baburezuxezu_subotulesuruno.pdf
    • http://files.prismcounselingservices.com/uploads/1/3/1/4/131438069/9059803.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/vonabubabosutogoxofe.pdf
    • https://cdn.shopify.com/s/files/1/0428/8842/9724/files/archie_comics_chilling_adventures_of_sabrina.pdf
    • https://cdn.shopify.com/s/files/1/0433/2670/1726/files/xerukujuru.pdf
    • https://cdn.shopify.com/s/files/1/0440/0994/7301/files/detalunibemav.pdf
    • https://cdn.shopify.com/s/files/1/0437/8374/9781/files/72484559680.pdf
    • https://cdn.shopify.com/s/files/1/0433/0258/4480/files/fewigugaguf.pdf
    • https://cdn.shopify.com/s/files/1/0428/7512/5923/files/lapamiferavixowoniduvufu.pdf
    • https://cdn.shopify.com/s/files/1/0433/1234/9334/files/kopas.pdf
    • https://cdn.shopify.com/s/files/1/0430/7265/1413/files/kofalevisomapovasudir.pdf
    • https://cdn.shopify.com/s/files/1/0429/6353/3977/files/58837875621.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_off0000a825.bin
45ce72d6cef919727ef10a7395ce1027d666655914a1501751367ece14377868		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA825 5932 bytes
font_01_sfnt_off0000bb5e.bin
d8897c99341bc4354b8b8c888c58932483a83735d506d5e8b607b5f1879ed051		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBB5E 15472 bytes

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