Malicious PDF — malware analysis report

Static analysis result for SHA-256 21303c4d341038c6…

MALICIOUS

PDF

62.7 KB Created: 2020-08-31 02:12:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 762418600b0fd72f4687715a5b46cb7c SHA-1: 7df9c5aa72bfef0baf17ecd3301508dc698a42f2 SHA-256: 21303c4d341038c60a5a573f971c5f35e5d4adb1a6781a5a37819bc636e80d02
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.cc/wix?keyword=the+perks+of+being+a+wallflower+movi'. This URL is likely used to redirect users to a malicious site for phishing or malware delivery. The document also contains a PDF link farm heuristic, indicating a large number of external links, many of which point to benign Shopify URLs, but the primary redirector is malicious. The document body contains obfuscated text and the malicious URL, reinforcing the lure.

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.cc/wix?keyword=the+perks+of+being+a+wallflower+movi
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/7074967355.pdf
    • https://cdn.shopify.com/s/files/1/0429/7470/7868/files/9089309768.pdf
    • https://cdn.shopify.com/s/files/1/0432/0290/4222/files/telexoga.pdf
    • https://cdn.shopify.com/s/files/1/0430/6249/3345/files/wososupifome.pdf
    • https://cdn.shopify.com/s/files/1/0431/5676/6869/files/kaplan_meier_curve_r.pdf
    • https://cdn.shopify.com/s/files/1/0430/7940/1623/files/82426576527.pdf
    • https://cdn.shopify.com/s/files/1/0434/5508/6742/files/14179135291.pdf
    • https://cdn.shopify.com/s/files/1/0435/5522/5763/files/herpes_zoster_treatment_guidelines.pdf
    • https://cdn.shopify.com/s/files/1/0432/4275/0114/files/warhammer_40k_inquisitor_martyr_achievement_guide.pdf
    • https://cdn.shopify.com/s/files/1/0434/5213/7622/files/11744326235.pdf
    • https://cdn.shopify.com/s/files/1/0433/2906/1032/files/zunoxizakalolekad.pdf
    • https://cdn.shopify.com/s/files/1/0434/1668/2663/files/tinemefuzodiwodi.pdf
    • https://cdn.shopify.com/s/files/1/0433/3882/5887/files/23072542114.pdf
    • https://static.usrfiles.com/ugd/b8c837_3e1279d65a5043e0b0f3c7dd1854f029.pdf
    • https://static.usrfiles.com/ugd/81d6a4_d10ea119eaf349669d00ba2ed6b91077.pdf
    • https://static.usrfiles.com/ugd/b8c837_bdf838f6053b4991886d3a1a2d6d2eaf.pdf
    • https://static.usrfiles.com/ugd/b8c837_508f0d145d584cf2b55359b7a6ab8505.pdf
    • https://static.usrfiles.com/ugd/0047a4_f2f8eadfa51940dd9f2631d74ee19fa4.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000a3ef.bin
8b20c114aefcc73e37c807bfdf61534a9663ea8645f136a4d6fcf8c5e8c20683
pdf-font-stream PDF embedded font (sfnt) at offset 0xA3EF 5620 bytes
font_01_sfnt_off0000b6f7.bin
488ffee5e9c33bcc1f3f00aec749f35977d0cdd209ffadaee35194d66ecc177d
pdf-font-stream PDF embedded font (sfnt) at offset 0xB6F7 6148 bytes
font_02_sfnt_off0000c6d7.bin
19339b94b4f09c73aea1817f4b3eb71f7d8cc4a2ed9858a1b2ad916ca5e273e6
pdf-font-stream PDF embedded font (sfnt) at offset 0xC6D7 11052 bytes