Malicious PDF — malware analysis report

Static analysis result for SHA-256 a86066753b35f6f9…

MALICIOUS

PDF

47.5 KB Created: 2020-09-01 01:27:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b0ab45c2e9b6afad46eeac6266f1f2bf SHA-1: ac25b2ce6ec611d92610c360fbeb880b0d60ed6e SHA-256: a86066753b35f6f9c5c5a54b651ae6e3623c4399ed2ffaa18443fc516a74e5ac
160 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, pointing to ttraff.com. It also contains a PDF link farm heuristic, with many links hosted on cdn.shopify.com. The document body suggests a lure to install a browser extension or update to view content, which is a common social-engineering tactic. The primary malicious IOC is the redirector URL, which is likely used to deliver a secondary payload.

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.
  • 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
  • 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.com/wix?keyword=android+emulator+for+pc+low+memory
    • https://cdn.shopify.com/s/files/1/0435/5499/6375/files/disney_animal_kingdom_map_2020.pdf
    • https://cdn.shopify.com/s/files/1/0431/1888/7068/files/navikufebowam.pdf
    • https://cdn.shopify.com/s/files/1/0433/3246/8904/files/jawutifojizen.pdf
    • https://cdn.shopify.com/s/files/1/0432/5238/3907/files/ben_graham_security_analysis.pdf
    • https://cdn.shopify.com/s/files/1/0433/7552/6042/files/44939303638.pdf
    • https://cdn.shopify.com/s/files/1/0439/0069/8792/files/8221929496.pdf
    • https://cdn.shopify.com/s/files/1/0438/2500/4706/files/belanjawan_2020_malaysia.pdf
    • https://cdn.shopify.com/s/files/1/0431/6643/3435/files/supevatateb.pdf
    • https://static.usrfiles.com/ugd/b65acf_f304b5917250407293f0475e1aa28e74.pdf
    • https://static.usrfiles.com/ugd/5fd5c1_9282e1e3ae93422891bc271f6056e552.pdf
    • https://static.usrfiles.com/ugd/b80405_3f687306f2bb4de484139181ab49fff0.pdf
    • https://static.usrfiles.com/ugd/5a1791_2d36af23d08f4fa58dff7d9d29b96310.pdf
    • https://static.usrfiles.com/ugd/b8c837_a8977a81fa1544d79f2289a7fe1f5aff.pdf
    • https://static.usrfiles.com/ugd/824332_70c047b537d44e48bfe0f299f2de63d2.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_off00006e89.bin
af840ed5da07b9dc80e6b22477290ce1f95cf2f5684e846f7bf2c13a74e8f4cc
pdf-font-stream PDF embedded font (sfnt) at offset 0x6E89 5188 bytes
font_01_sfnt_off00008020.bin
5382d7faa8ec2b2a93194dbefebbb65f43d493dc2146824150ee46c6869478cf
pdf-font-stream PDF embedded font (sfnt) at offset 0x8020 10196 bytes
font_02_sfnt_off0000a31a.bin
b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c
pdf-font-stream PDF embedded font (sfnt) at offset 0xA31A 4324 bytes