Malicious PDF — malware analysis report

Static analysis result for SHA-256 c22d0072e1ada1b5…

MALICIOUS

PDF

48.4 KB Created: 2020-08-10 01:15:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5d684426b29cbe3d54a82d7b80030ef8 SHA-1: 375f7212d80c29dd6affad622df77f91b87cb926 SHA-256: c22d0072e1ada1b5c01e9ddba17bb706971a6aa594f646443a641abe78ead5a8
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to external resources, indicating a link farm or redirection strategy. One critical heuristic identified a link to a known malicious redirector at 'https://ttraff.ru/pify?keyword=tomaso+albinoni+adagio+pdf'. The document body, though heavily obfuscated, also contains this URL, suggesting the primary intent is to direct users to malicious infrastructure. No scripts were extracted from this sample.

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=tomaso+albinoni+adagio+pdf
    • http://vivoj.edinburghcorporate7s.com/uploads/1/3/1/3/131380600/005dedae6eea542.pdf
    • http://files.firehousetechnology.com/uploads/1/3/0/7/130739169/89e230f0be.pdf
    • http://files.zoomkidspalakkad.com/uploads/1/3/1/4/131406985/2758958.pdf
    • http://files.wellshireeast.org/uploads/1/3/1/4/131452961/lovusasav.pdf
    • https://cdn.shopify.com/s/files/1/0428/0736/1703/files/9899907028.pdf
    • https://cdn.shopify.com/s/files/1/0430/0685/3269/files/jeliwolovupuguwenijow.pdf
    • https://cdn.shopify.com/s/files/1/0431/8475/0743/files/87096002245.pdf
    • https://cdn.shopify.com/s/files/1/0430/8041/7447/files/afridi_tribe.pdf
    • https://cdn.shopify.com/s/files/1/0427/5663/6828/files/gejarulorefuvosimut.pdf
    • https://cdn.shopify.com/s/files/1/0430/8071/2346/files/wisovi.pdf
    • https://cdn.shopify.com/s/files/1/0434/7353/5142/files/39909358938.pdf
    • https://cdn.shopify.com/s/files/1/0431/2177/0656/files/aha_bls_test_questions_and_answers.pdf
    • https://cdn.shopify.com/s/files/1/0427/9628/6111/files/kigav.pdf
    • https://cdn.shopify.com/s/files/1/0432/1994/3579/files/pulugonenewizu.pdf
    • https://cdn.shopify.com/s/files/1/0432/9806/2501/files/command_prompt_windows_10_commands.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_off00006b0f.bin
19739443de2765680691079c9e877db43361251b52b921974db60b11ec775584		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6B0F 5352 bytes
font_01_sfnt_off00007d29.bin
0e26d367e3b79ff8826418ceb7c9dbf56c33972accf60c4cb91fb7afc8167ba5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7D29 9940 bytes
font_02_sfnt_off00009f78.bin
e93acd332f5893643511f4cefd38969ad5c744ad1b08842a788b6be7d277dd15		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9F78 16204 bytes

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