Malicious PDF — malware analysis report

Static analysis result for SHA-256 334241dbeb2d4537…

MALICIOUS

PDF

43.0 KB Created: 2020-08-26 17:44:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9336ed5020b9c3a90870b7f4a555286e SHA-1: 9bd969a8fc18a1623059766a5119b72fd2182590 SHA-256: 334241dbeb2d453727af9369072cc8a307b8fa4ba04d9c3589b59fb543e4473d
120 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with a critical heuristic firing indicating a malicious redirector at 'https://ttraff.com/pify?keyword=macroscale+and+microscale+organic+experiments+6th+edition+solutions'. The document body, though heavily obfuscated, appears to be a lure related to textbook solutions, aiming to trick users into clicking the malicious link. The presence of a link farm further supports the malicious intent of driving traffic to potentially harmful sites.

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=macroscale+and+microscale+organic+experiments+6th+edition+solutions
    • http://files.bmystiic.com/uploads/1/3/0/7/130775071/9e0911b022.pdf
    • http://files.robelynmartinezyambao.com/uploads/1/3/1/4/131454766/sumizibelewizox.pdf
    • http://dolabo.brew-tech.org/uploads/1/3/1/3/131379057/zomosuzib.pdf
    • http://zerem.rwandamedicaljournal.org/uploads/1/3/1/4/131482975/dokajo.pdf
    • https://cdn.shopify.com/s/files/1/0434/0501/7238/files/jowutakodijuju.pdf
    • https://cdn.shopify.com/s/files/1/0438/4302/7104/files/75316862745.pdf
    • https://cdn.shopify.com/s/files/1/0431/3825/2957/files/12217461921.pdf
    • https://cdn.shopify.com/s/files/1/0429/5213/0716/files/tidipitekesipapuraxedoja.pdf
    • https://cdn.shopify.com/s/files/1/0433/1434/8197/files/tanuvinuririgubunarej.pdf
    • https://cdn.shopify.com/s/files/1/0432/9209/8726/files/jezetabupo.pdf
    • https://cdn.shopify.com/s/files/1/0433/8306/2678/files/linking_verb_worksheets.pdf
    • https://cdn.shopify.com/s/files/1/0429/7133/2767/files/68976031936.pdf
    • https://cdn.shopify.com/s/files/1/0437/3292/6615/files/quality_control_interview_questions_and_answers_for_freshers.pdf
    • https://cdn.shopify.com/s/files/1/0435/0178/1156/files/bobcat_763_service_manual.pdf
    • https://cdn.shopify.com/s/files/1/0436/9340/8409/files/personality_plus_test.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_off00005a32.bin
b4049dca3726e573c6cf7aa63d5f0da239e90003adf3f41f7e909aad735fddf7
pdf-font-stream PDF embedded font (sfnt) at offset 0x5A32 5596 bytes
font_01_sfnt_off00006d0e.bin
d06f427d9aa36465db4ee46f780129d5d098f240a0fc14db5a169edd8b595ed7
pdf-font-stream PDF embedded font (sfnt) at offset 0x6D0E 10400 bytes
font_02_sfnt_off00009064.bin
ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3
pdf-font-stream PDF embedded font (sfnt) at offset 0x9064 4324 bytes