Malicious PDF — malware analysis report

Static analysis result for SHA-256 ad003a1f8cf66980…

MALICIOUS

PDF

50.5 KB Created: 2020-09-01 22:57:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: fdd3ec51cffc7a1dd0071f6700c4df22 SHA-1: e38ae84641eaaf123ae9b87bdade7bc1fbe1783d SHA-256: ad003a1f8cf66980cc3d0c083b8b67310d749e84810a0645ecc1a4a398432534
180 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF document contains a lure related to 'Atmega328p programming pdf' and embeds multiple links. One of these links, 'https://ttraff.ru/wix?keyword=atmega328p+programming+pdf', is identified as a malicious redirector. The document also instructs the user to install a browser extension or update, which is a common social-engineering tactic for credential theft or malware installation. No scripts were extracted, but the combination of social engineering and malicious links points to a phishing or malware delivery attempt.

Heuristics 5

  • 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.
  • Browser extension / update installation lure high SE_BROWSER_INSTALL_LURE
    Document tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
  • QR-code redirect lure medium SE_QR_LURE
    Document instructs the user to scan a QR code with a phone — consistent with QR phishing, but also common in legitimate documents
  • 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/wix?keyword=atmega328p+programming+pdf
    • https://cdn.shopify.com/s/files/1/0437/5746/9845/files/mevezagenamope.pdf
    • https://cdn.shopify.com/s/files/1/0431/0152/0023/files/xenomugevor.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/15138334831.pdf
    • https://cdn.shopify.com/s/files/1/0441/3282/7288/files/8595240604.pdf
    • https://cdn.shopify.com/s/files/1/0437/6402/3450/files/bayan_nut_bolt_todegi_song.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/bifivejeg.pdf
    • https://static.usrfiles.com/ugd/0d002d_da8d4e8f02b14cf5ba679a4f146bf3d8.pdf
    • https://static.usrfiles.com/ugd/d93890_b665908178344f83838f797fe9b70da6.pdf
    • https://static.usrfiles.com/ugd/5e8de6_d09975db0979431b8c6acb189d9e4406.pdf
    • https://static.usrfiles.com/ugd/2c76f4_6dd08107802c48bf82c33fd3246f28a4.pdf
    • https://static.usrfiles.com/ugd/badafb_296b4e61186a46ab8bd1133760b22b98.pdf
    • https://static.usrfiles.com/ugd/9ea91e_c2837b6cb3044912a58d2b1538b80198.pdf
    • https://static.usrfiles.com/ugd/b8c837_93fb442f601d4f1396acf8fe3e42e002.pdf
    • https://static.usrfiles.com/ugd/191a6d_68198cbce1e2461688d313d629a31ed2.pdf
    • https://static.usrfiles.com/ugd/b8c837_d431b805142644bca6967532d48adb4b.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_off000079dd.bin
90a5860317ed1f8fbb163eaa65c2e79f2421557d08944a5fc2b33e3af53aae5f
pdf-font-stream PDF embedded font (sfnt) at offset 0x79DD 5632 bytes
font_01_sfnt_off00008cf1.bin
1ebbb1c569cb6cf450659b38889a5078ebe1fe21de54fd9a53001e7dd7ace62b
pdf-font-stream PDF embedded font (sfnt) at offset 0x8CF1 15436 bytes