Malicious PDF — malware analysis report

Static analysis result for SHA-256 2b153ccf0d927369…

MALICIOUS

PDF

47.6 KB Created: 2020-09-01 15:12:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 61f90c47055bb1815e2486812fe5a4bf SHA-1: 2fe60f8586f2cad6cdf033cb6d19c8c85c93eeb4 SHA-256: 2b153ccf0d9273695aa3b98beed5b8300aae79b3ef56a1d948a2bd4ae23bddfe
120 Risk Score

Malware Insights

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

The PDF file exhibits characteristics of an SEO link farm, embedding a large quantity of links to external PDFs hosted on Shopify. One of these links, 'https://ttraff.com/wix?keyword=phone+audiophile+android', is identified as a malicious redirector. The document body contains garbled text but includes the malicious URL and several benign-looking Shopify URLs, suggesting a deceptive tactic to mask malicious activity within a large number of links.

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.com/wix?keyword=phone+audiophile+android
    • https://cdn.shopify.com/s/files/1/0447/8458/2813/files/blessed_sacrament_prayer_book.pdf
    • https://cdn.shopify.com/s/files/1/0434/5243/2537/files/97961736335.pdf
    • https://cdn.shopify.com/s/files/1/0438/3706/3328/files/2017_dodge_caravan_owner_s_manual.pdf
    • https://cdn.shopify.com/s/files/1/0436/0414/8381/files/8519517738.pdf
    • https://cdn.shopify.com/s/files/1/0437/8699/3813/files/hindu_calendar_2020_august.pdf
    • https://static.usrfiles.com/ugd/738632_9b3e0678242b46479dd51e3b0e73da29.pdf
    • https://static.usrfiles.com/ugd/b8c837_20f2a63ed025432e8c3b46eb407c12ee.pdf
    • https://static.usrfiles.com/ugd/46429b_3a1117c77c814afba4196b4fa573e1f6.pdf
    • https://static.usrfiles.com/ugd/80bfa9_e1c8ce69b3b44bf4b51479ce90e8d8a0.pdf
    • https://static.usrfiles.com/ugd/b8c837_93dae03bf6514f08b27d70aaf29ecec3.pdf
    • https://cdn.shopify.com/s/files/1/0430/6383/6834/files/replace_text_with_css.pdf
    • https://cdn.shopify.com/s/files/1/0462/6176/4245/files/1086977026.pdf
    • https://cdn.shopify.com/s/files/1/0438/2674/1405/files/volume_of_sphere_and_hemisphere_worksheet.pdf
    • https://cdn.shopify.com/s/files/1/0465/1991/0558/files/aambala_movie_1080p_hd_video_song.pdf
    • https://cdn.shopify.com/s/files/1/0459/1462/0053/files/60642839713.pdf
    • https://cdn.shopify.com/s/files/1/0429/6704/0154/files/98582313542.pdf
    • https://cdn.shopify.com/s/files/1/0460/6561/5003/files/duveloxizu.pdf
    • https://cdn.shopify.com/s/files/1/0437/1818/1013/files/nukewinamokununeguv.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_off00007e25.bin
f2796f2f3005e0bf7c2f3130ac839b89911ea68f0072a7a0dc4339cb07d646c1
pdf-font-stream PDF embedded font (sfnt) at offset 0x7E25 4872 bytes
font_01_sfnt_off00008eac.bin
dc75cc607aa05c861b333f58c4ddd2db537fe72494924b64957a962b75251c6f
pdf-font-stream PDF embedded font (sfnt) at offset 0x8EAC 10192 bytes