Malicious PDF — malware analysis report

Static analysis result for SHA-256 a42115108ee203a5…

MALICIOUS

PDF

45.8 KB Created: 2020-08-31 09:12:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 77d04aa9ac852e7de066685063e77830 SHA-1: 0c506c470b4f2d1aab8085db40b40eed607e0a8b SHA-256: a42115108ee203a5f20ef70ca968b095f387c1b8d61531d3103173598e468e5b
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, a common tactic for SEO poisoning and redirecting users to malicious sites. One of the primary links, 'https://ttraff.ru/wix?keyword=nitain+extract+warframe+farm', is flagged as a malicious redirector. The document body, though heavily obfuscated, also contains this URL, reinforcing its role as a lure. No scripts were extracted, and the PDF structure itself is the primary vector for the attack.

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.ru/wix?keyword=nitain+extract+warframe+farm
    • https://cdn.shopify.com/s/files/1/0455/6816/4005/files/52606915573.pdf
    • https://cdn.shopify.com/s/files/1/0435/8999/2605/files/android_phone_bitcoin_miner.pdf
    • https://cdn.shopify.com/s/files/1/0429/5108/2143/files/1999_royal_rumble.pdf
    • https://cdn.shopify.com/s/files/1/0458/5973/3657/files/alcohol_detox_at_home_guide.pdf
    • https://cdn.shopify.com/s/files/1/0429/2670/2755/files/29394597491.pdf
    • https://cdn.shopify.com/s/files/1/0429/9603/9839/files/calculus_early_transcendentals_10th_edition_solution_manual_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0431/7259/3821/files/19027441553.pdf
    • https://cdn.shopify.com/s/files/1/0437/8394/6401/files/content_grabber_indesign.pdf
    • https://cdn.shopify.com/s/files/1/0435/8003/1135/files/tuboror.pdf
    • https://cdn.shopify.com/s/files/1/0437/8384/8097/files/pulexazepoten.pdf
    • https://static.usrfiles.com/ugd/9ff9b8_edfb3e95e19f4fb8a32effbc0b525cc5.pdf
    • https://static.usrfiles.com/ugd/5fd5c1_bde5cf55f04d410fa1b6f143adc2e6e9.pdf
    • https://static.usrfiles.com/ugd/6924eb_dbfc3ad7aa5843b9bedb66384baf3252.pdf
    • https://static.usrfiles.com/ugd/32777b_2d5946cc3d284160ba4c46cea5aa3f11.pdf
    • https://static.usrfiles.com/ugd/b8c837_321a160ba6674138a1b9479bc20edcbe.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_off000068f2.bin
b6c9b3249e525f4ce30471b65a1ad7c6edcf387c72f8087d3ebecd1773f3531f
pdf-font-stream PDF embedded font (sfnt) at offset 0x68F2 4624 bytes
font_01_sfnt_off00007893.bin
1911b0e21f7710af67c035ad5f889b934a2ddede76bc399521dbc660f67e316d
pdf-font-stream PDF embedded font (sfnt) at offset 0x7893 10412 bytes
font_02_sfnt_off00009c2c.bin
cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34
pdf-font-stream PDF embedded font (sfnt) at offset 0x9C2C 4324 bytes