Malicious PDF — malware analysis report

Static analysis result for SHA-256 3a2c52983ce9951c…

MALICIOUS

PDF

43.5 KB Created: 2020-08-22 12:16:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 64a33496426e327c2f5ee43e3007caae SHA-1: c18b7cc335e15ce9239c74b826787b78c1d20ba0 SHA-256: 3a2c52983ce9951cfc5c3058fd88e2bb4fc5d593525c26f8b6e61964505e8e7f
120 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.com/pify?keyword=free+12x12+shed+plans'. This URL is presented within the document body, disguised as a lure for free shed plans. The file also exhibits characteristics of a link farm, with numerous embedded URLs, many pointing to Shopify. The primary malicious IOC is the redirector URL, which likely leads to further malicious content or exploitation.

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/pify?keyword=free+12x12+shed+plans
    • http://nimolo.barefoottofino.com/uploads/1/3/2/7/132741009/8569925.pdf
    • https://cdn.shopify.com/s/files/1/0432/5595/5619/files/76509045860.pdf
    • https://cdn.shopify.com/s/files/1/0437/2794/5879/files/simple_addition_word_problems.pdf
    • https://cdn.shopify.com/s/files/1/0431/6423/7988/files/dadaxugoz.pdf
    • https://cdn.shopify.com/s/files/1/0428/8679/1334/files/anorexia_nerviosa_psiquiatria.pdf
    • https://cdn.shopify.com/s/files/1/0432/4828/7912/files/download_novel_arsene_lupin.pdf
    • https://cdn.shopify.com/s/files/1/0429/0933/5715/files/towuxegawozamapudaj.pdf
    • https://cdn.shopify.com/s/files/1/0430/2359/7725/files/online_advertising_expenditure_report_2017.pdf
    • https://cdn.shopify.com/s/files/1/0434/3624/5142/files/toyota_carina_e_manual.pdf
    • https://cdn.shopify.com/s/files/1/0431/8117/9048/files/kudikerisipopipod.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/35543542817.pdf
    • https://cdn.shopify.com/s/files/1/0432/6604/8165/files/torukesitogule.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/71062637782.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_off00006121.bin
60abcd38aa7c659d8b0382d14aef40276aacd83337155736f5bebb08043c6b30		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6121 4804 bytes
font_01_sfnt_off0000715b.bin
7a222451de94c424faea8ddfa97ff8c0bf40ae33b62e6969a86c5f68d43cdd1b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x715B 9852 bytes
font_02_sfnt_off00009319.bin
ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9319 4324 bytes

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