Malicious PDF — malware analysis report

Static analysis result for SHA-256 fabc5d925e131761…

MALICIOUS

PDF

51.6 KB Created: 2020-08-09 23:04:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 52e57c3a85561177bb05d0c81c4f2108 SHA-1: 4d6c5d69f2ebd7c109ce79e2de7e74956e96d9ad SHA-256: fabc5d925e131761a0130aef1191db752c877e9c15e644d9aa01abd5ac813536
120 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.ru/pify?keyword=computer+post+and+beep+codes+pdf'. This indicates an attempt to lure the user to a malicious site. The file also exhibits characteristics of a PDF link farm, with numerous embedded links, many of which point to Shopify domains but are likely part of a broader SEO manipulation scheme to obscure the malicious redirector.

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/pify?keyword=computer+post+and+beep+codes+pdf
    • http://files.madforlife.org/uploads/1/3/1/8/131871852/kefomazegoba.pdf
    • http://files.promisewed.com/uploads/1/3/2/6/132682282/16a0f30f.pdf
    • http://files.fyrgo.com/uploads/1/3/1/3/131380786/rabixorijebu_donobo_javuvu.pdf
    • http://files.allaboutthemouse.com/uploads/1/3/0/9/130969553/7692756.pdf
    • http://wukovarow.wolcottcasa.org/uploads/1/3/1/3/131398560/92645da7b7bd2b2.pdf
    • https://cdn.shopify.com/s/files/1/0433/2165/5464/files/bls_cpr_book.pdf
    • https://cdn.shopify.com/s/files/1/0435/8671/5805/files/54285580325.pdf
    • https://cdn.shopify.com/s/files/1/0433/0127/3750/files/a_view_from_the_bridge_free.pdf
    • https://cdn.shopify.com/s/files/1/0431/0132/3420/files/95358812664.pdf
    • https://cdn.shopify.com/s/files/1/0431/8376/7713/files/important_branches_of_biology.pdf
    • https://cdn.shopify.com/s/files/1/0430/8038/4674/files/zajabaresobebobufu.pdf
    • https://cdn.shopify.com/s/files/1/0432/9144/3364/files/64946469096.pdf
    • https://cdn.shopify.com/s/files/1/0440/1335/5166/files/28780402717.pdf
    • https://cdn.shopify.com/s/files/1/0428/6794/9724/files/54514881352.pdf
    • https://cdn.shopify.com/s/files/1/0434/7677/9174/files/arnold_toynbee_free_download.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_off000076f9.bin
984c1741adfb455f4ba91b56dfb8ee2204f2679aca2d5ba5cba415c7be534b23		 pdf-font-stream PDF embedded font (sfnt) at offset 0x76F9 5316 bytes
font_01_sfnt_off000088e7.bin
12cf356f716540f7c7e0f2c90d074a0e6c25fbd83aaac13f87de35002455a757		 pdf-font-stream PDF embedded font (sfnt) at offset 0x88E7 10008 bytes
font_02_sfnt_off0000ab68.bin
24db6e165f8eedc51ccad5822055bcb9418e99cc9401a1c0d388878d8dd188a7		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAB68 16448 bytes

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