Malicious PDF — malware analysis report

Static analysis result for SHA-256 c87b6ed17cd7d63d…

MALICIOUS

PDF

41.7 KB Created: 2020-09-03 10:15:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b0e79348883fb24febffc2df72c9a318 SHA-1: 5e9b8496c5faf181da0bcd5685b4aa54e1af1a96 SHA-256: c87b6ed17cd7d63d0d1e68cc08c118c0fd5f0b55589d6acc91bbe7386d8393d0
128 Risk Score

Malware Insights

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

The PDF file contains a malicious redirector link disguised as a download for 'Car driving school 2016 apk'. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK indicates the primary URL leads to known malicious infrastructure. Additionally, the PDF_SEO_LINK_FARM heuristic suggests a large number of outbound links, likely for SEO manipulation or to host further malicious content. The presence of a call-to-action phrase further supports the social engineering attempt.

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.link/wix?keyword=car+driving+school+2016+apk
    • https://static.usrfiles.com/ugd/f64db8_61840ea9def74f7fb620b419a1df6318.pdf
    • https://static.usrfiles.com/ugd/b8c837_3192a14a0fbe4f5593de9274581fa9d7.pdf
    • https://static.usrfiles.com/ugd/0d2908_cab918ce3afb429398be817742aac32f.pdf
    • https://static.usrfiles.com/ugd/e2c6c1_1c3fc2460411405fbd672722e9428265.pdf
    • https://cdn.shopify.com/s/files/1/0427/7652/7014/files/dokureviwenulogikukabim.pdf
    • https://cdn.shopify.com/s/files/1/0428/9078/9020/files/71088421899.pdf
    • https://static.usrfiles.com/ugd/b8c837_f702f7ca07b3449f80b3d98b7fa04ab3.pdf
    • https://static.usrfiles.com/ugd/ade4e6_29ce57e2cbab4790ac21fadbee486799.pdf
    • https://static.usrfiles.com/ugd/de60da_98786d48d5594e06a38825ffdb8e5916.pdf
    • https://cdn.shopify.com/s/files/1/0430/5967/5290/files/vewel.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/viruxirekosarobavogerij.pdf
    • https://cdn.shopify.com/s/files/1/0433/0684/4315/files/familezexulujefawadejol.pdf
    • https://cdn.shopify.com/s/files/1/0434/6013/3030/files/range_tank_guide_osrs.pdf
    • https://cdn.shopify.com/s/files/1/0430/8277/6729/files/judegezujozajazek.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_off0000633f.bin
23bee6999429e92eca640237777f585c1fcda8f7aaa03c7da8a05ec2b2c00831		 pdf-font-stream PDF embedded font (sfnt) at offset 0x633F 5844 bytes
font_01_sfnt_off0000772b.bin
1703975cf09408f698402dda11b10bef7fd26a58d09e1824b6ce64c1eacffcb1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x772B 10164 bytes

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