Malicious PDF — malware analysis report

Static analysis result for SHA-256 af36b19b04f6e1e4…

MALICIOUS

PDF

43.0 KB Created: 2020-09-01 13:37:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e1f89af521e11fbf7dbaf8d917146862 SHA-1: 882884d1384fa900c5202d9f9c63dd19e05763d7 SHA-256: af36b19b04f6e1e4e9baf4ba8400bdb136c5d5e5a28502fb817461b3b3202fe2
130 Risk Score

Malware Insights

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

The PDF file was identified as malicious due to the presence of a large number of embedded links, a technique often used to redirect users to malicious sites. One such link, 'https://ttraff.com/wix?keyword=vidmate+for+iphone+4+free', points to a known malicious redirector. The document body contains garbled text but also includes the same malicious URL, suggesting an attempt to lure users into clicking it. The heuristic 'PDF_MALICIOUS_REDIRECTOR_LINK' confirms the malicious nature of the redirector.

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.com/wix?keyword=vidmate+for+iphone+4+free
    • https://cdn.shopify.com/s/files/1/0435/0833/4744/files/yesterday_once_more_piano_sheet.pdf
    • https://cdn.shopify.com/s/files/1/0430/6750/6837/files/87214834023.pdf
    • https://cdn.shopify.com/s/files/1/0432/9157/4430/files/can_t_find_my_way_home_chords.pdf
    • https://cdn.shopify.com/s/files/1/0430/7881/1810/files/how_to_refresh_jquery_autocomplete.pdf
    • https://cdn.shopify.com/s/files/1/0437/6972/5080/files/ludozofiforipubusekiw.pdf
    • https://cdn.shopify.com/s/files/1/0436/5425/0654/files/disadvantages_of_marketing_information_system.pdf
    • https://cdn.shopify.com/s/files/1/0428/6382/0959/files/58946207581.pdf
    • https://cdn.shopify.com/s/files/1/0428/2492/5351/files/bepasimewenugari.pdf
    • https://cdn.shopify.com/s/files/1/0429/6572/9429/files/xoludurudebidigivagevafu.pdf
    • https://cdn.shopify.com/s/files/1/0431/8196/5474/files/nasezuxuvijemuwalawulo.pdf
    • https://cdn.shopify.com/s/files/1/0438/5318/5174/files/bulletproof_dieta.pdf
    • https://cdn.shopify.com/s/files/1/0432/5199/0691/files/naruto_card_price_guide.pdf
    • https://cdn.shopify.com/s/files/1/0435/3739/9960/files/how_to_make_file_look_like_a_book.pdf
    • https://cdn.shopify.com/s/files/1/0432/9606/3652/files/apologia_de_socrates_descargar_gratis.pdf
    • https://cdn.shopify.com/s/files/1/0432/6840/7464/files/zugewi.pdf
    • https://cdn.shopify.com/s/files/1/0428/5199/1719/files/kobafezom.pdf
    • https://cdn.shopify.com/s/files/1/0437/4947/4453/files/medanswering_book_a_ride_phone_number.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/
    • https://cdn.shopify.com/s/files/1/0

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006d7f.bin
0a511d1c9256697421630631b7d3ee5b3e94100a54c091e038127792ed04f8ef
pdf-font-stream PDF embedded font (sfnt) at offset 0x6D7F 5124 bytes
font_01_sfnt_off00007eca.bin
6d8b652781bd3b85d2e145344b23bdd2ebb747399dcbb3e1ee401f098936f863
pdf-font-stream PDF embedded font (sfnt) at offset 0x7ECA 9420 bytes