Malicious PDF — malware analysis report

Static analysis result for SHA-256 f653cc27fd14707f…

MALICIOUS

PDF

42.7 KB Created: 2020-08-17 08:43:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 728b7b5974e9a11199eca1527d8bd7a3 SHA-1: 246432c20d50d18fa36a175a86379de699d1fe44 SHA-256: f653cc27fd14707f74f1e552038dddcd22a658a467f3d8b3c8f7d27e7aa33334
120 Risk Score

Malware Insights

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

The PDF file exhibits characteristics of a link farm, with numerous embedded URLs pointing to external PDF documents. One URL, 'https://ttraff.ru/pify?keyword=movimiento+rectilineo+uniformemente+acelerado+definicion+fisica', is flagged as a malicious redirector. The document body contains garbled text and a repeated instance of this malicious URL, suggesting an attempt to manipulate search engine results or distribute further malicious content through these 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.ru/pify?keyword=movimiento+rectilineo+uniformemente+acelerado+definicion+fisica
    • http://dunawagit.rareblogger.com/uploads/1/3/1/4/131406893/mugovip.pdf
    • http://poravan.vanillabeanonline.com/uploads/1/3/0/7/130740514/lujugisanitixif_dorafavebenosuk.pdf
    • http://wagobinek.safegrowth.org/uploads/1/3/1/3/131383908/99f795ebb4.pdf
    • http://lowafuwol.alicedmovie.com/uploads/1/3/1/0/131070450/tavidezuja.pdf
    • http://files.andrewwarner.org/uploads/1/3/0/7/130775186/jaroradin.pdf
    • https://cdn.shopify.com/s/files/1/0435/6158/2755/files/xemesav.pdf
    • https://cdn.shopify.com/s/files/1/0427/8091/7926/files/21788160173.pdf
    • https://cdn.shopify.com/s/files/1/0432/2813/5591/files/convert_webm_to_mp4_vlc.pdf
    • https://cdn.shopify.com/s/files/1/0428/2191/0687/files/encyclopedia_of_life_support_systems_eolss.pdf
    • https://cdn.shopify.com/s/files/1/0427/6885/9303/files/ravovaroxunogepoxumu.pdf
    • https://cdn.shopify.com/s/files/1/0430/9241/0525/files/xulunemafiv.pdf
    • https://cdn.shopify.com/s/files/1/0434/3411/5233/files/85192422290.pdf
    • https://cdn.shopify.com/s/files/1/0434/2549/7239/files/where_to_watch_naruto_shippuden_dubbed_legally.pdf
    • https://cdn.shopify.com/s/files/1/0432/8197/3416/files/47585487797.pdf
    • https://cdn.shopify.com/s/files/1/0430/5652/9565/files/sijevabevezuxiwu.pdf
    • https://cdn.shopify.com/s/files/1/0437/5438/9665/files/75236521855.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_off00006474.bin
183714c1f0a22710e2ee7f9eb92bbb1704a602d6c3b502b8f321af190929a7a9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6474 5232 bytes
font_01_sfnt_off00007630.bin
57c78f093c082ec8bb0343ec847388a3c5cc803e8c8b9d6944f68835015fde03		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7630 11384 bytes

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