Malicious PDF — malware analysis report

Static analysis result for SHA-256 1e94dcef8e87f429…

MALICIOUS

PDF

35.7 KB Created: 2020-09-02 20:20:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 85a305ac0112fe2840bb5be3ef1334d0 SHA-1: 90be05dc9ac509069075b6dc1c7c27d6716362b9 SHA-256: 1e94dcef8e87f42996b442670ed9b4fca2b1ae32f15542832c45feb317602531
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.link/pify?keyword=automatic+control+system+by+francis+raven+pdf'. It also contains a mass external PDF link farm, with the first URL being 'https://cdn.shopify.com/s/files/1/0436/3422/9398/files/catalogo_mary_kay_2020.pdf'. The document body is heavily obfuscated but contains the same lure text as the redirector URL, suggesting a social engineering attempt to trick the user into clicking the malicious link.

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.link/pify?keyword=automatic+control+system+by+francis+raven+pdf
    • https://cdn.shopify.com/s/files/1/0436/3422/9398/files/catalogo_mary_kay_2020.pdf
    • https://cdn.shopify.com/s/files/1/0437/8768/1954/files/12654195119.pdf
    • https://cdn.shopify.com/s/files/1/0435/0948/1626/files/silabus_biologi_sma_kelas_xi.pdf
    • https://static.usrfiles.com/ugd/e6092c_3cfbc466d6874f499beca0379244bfa6.pdf
    • https://static.usrfiles.com/ugd/4aae87_f45f1e850c014bf5a9e4fd182da5ff52.pdf
    • https://static.usrfiles.com/ugd/b8c837_cd6761519cde4555960332b4d5ed1932.pdf
    • https://static.usrfiles.com/ugd/0e9fc2_386f21d0b57a491cae484b47a2bbd1aa.pdf
    • https://static.usrfiles.com/ugd/191a6d_515a4a003d6f48a6af32cdcbd9e95974.pdf
    • https://static.usrfiles.com/ugd/0c268c_be53f95d2bae47d6bdef961bc3ffdc6e.pdf
    • https://static.usrfiles.com/ugd/f0e51d_030e73aa6c4b45059e47550da4aa5306.pdf
    • https://static.usrfiles.com/ugd/822ecd_6e4a57cdd1a949549df09873ac948d6c.pdf
    • https://static.usrfiles.com/ugd/f14cf6_2857c3c01eb340719774af852c09588e.pdf
    • https://static.usrfiles.com/ugd/f46427_0ff810d1dd2a430e91bd4eab38e75610.pdf
    • https://cdn.shopify.com/s/files/1/0437/5461/9041/files/88541541426.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/22700630349.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_off00004ec1.bin
ea7eaa0e877c49ac7adc8d4a8c206e9f2d9873039d9cc015f5a628c48f18b3cf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4EC1 5592 bytes
font_01_sfnt_off000061b4.bin
7246a7ba935b53375a191513f32b5d66bcc735c548ce996b73fc48966f55f1d7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x61B4 9336 bytes

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