Malicious PDF — malware analysis report

Static analysis result for SHA-256 c51ae82b23eec92a…

MALICIOUS

PDF

54.0 KB Created: 2020-08-19 04:50:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 43d4ba74d70cdbfa411768993f94d381 SHA-1: e28db51c2fb89ba6d91b2a4d859aed1fd0e2cc13 SHA-256: c51ae82b23eec92a314a9d890dd9e3d0190b8376665a3ed8c98e8d70e0f0a0b1
120 Risk Score

Malware Insights

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

The PDF file was flagged for containing a malicious redirector link and a large number of external PDF links, suggesting a link farm or phishing attempt. The primary malicious URL identified is https://ttraff.com/pify?keyword=alfresco+community+4.+2.+f. The document body contains garbled text and embedded URLs, further supporting the malicious intent. 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.com/pify?keyword=alfresco+community+4.+2.+f
    • http://files.mbrilliantbody.com/uploads/1/3/0/7/130776336/xetisabiro-wuwat-bokaxu-pukizosewe.pdf
    • http://files.hlfmgoats.com/uploads/1/3/1/3/131383553/jopaxubesoz.pdf
    • https://cdn.shopify.com/s/files/1/0439/1842/6267/files/antimony_trichloride_solubility_in_chloroform.pdf
    • https://cdn.shopify.com/s/files/1/0427/8996/1884/files/55679445479.pdf
    • https://cdn.shopify.com/s/files/1/0447/3238/3381/files/dependent_prepositions_exercises.pdf
    • https://cdn.shopify.com/s/files/1/0431/3910/4917/files/newewuxe.pdf
    • https://cdn.shopify.com/s/files/1/0437/3286/1079/files/psoriasis_treatment_guidelines.pdf
    • https://cdn.shopify.com/s/files/1/0440/4881/0149/files/28349067756.pdf
    • https://cdn.shopify.com/s/files/1/0431/7462/5437/files/allowances_worksheet_definition.pdf
    • https://cdn.shopify.com/s/files/1/0434/3100/2264/files/blurb_formal_synonym.pdf
    • https://cdn.shopify.com/s/files/1/0433/3253/4422/files/20230875727.pdf
    • https://cdn.shopify.com/s/files/1/0428/0510/0707/files/sedapotip.pdf
    • http://www.alfresco.com/community/images/windows-icon.png
    • 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 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000061cc.bin
4b8cf8c7aa6763138b175cb76b8443fecc0e086c179d74d56d23c669baeb3434		 pdf-font-stream PDF embedded font (sfnt) at offset 0x61CC 5040 bytes
font_01_sfnt_off000072df.bin
e9a5a1f6ed95b1e3669933bb00002ad32a1708c3e0b735191cad5e02368a6c7d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x72DF 1800 bytes
font_02_sfnt_off00007b6d.bin
930c73b8b1e86364a021a691d461b64be2ce21bb6094b7f1fa235985fdbb94fb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7B6D 13544 bytes
font_03_sfnt_off0000a6d0.bin
531e37f64a2e7dc3bfb257675d9e6c644c7b1597f33ba9a969cd005a7ed65660		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA6D0 16312 bytes
font_04_sfnt_off0000bc5b.bin
d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBC5B 4324 bytes

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