Malicious PDF — malware analysis report

Static analysis result for SHA-256 3c413c89ef619d7e…

MALICIOUS

PDF

45.2 KB Created: 2020-08-11 16:43:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6f8b50f92dff2f95277e5b7244cd0c27 SHA-1: b60869b3be16c12357a4f15dbe37366ace03a2cf SHA-256: 3c413c89ef619d7e57ce6416371c8dbe547344f26eb0613163f47b45c5fb1828
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, specifically pointing to 'https://ttraff.cc/pify?keyword=lung+cancer+journal+pdf'. This URL is presented within the document body, suggesting a social engineering lure to trick the user into clicking it. The file also exhibits characteristics of a link farm, with numerous external PDF links, many hosted on Shopify. The primary intent appears to be redirecting the user to malicious infrastructure.

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.cc/pify?keyword=lung+cancer+journal+pdf
    • http://files.ildcc.org/uploads/1/3/1/4/131437949/joseta_xarawidevuxila.pdf
    • http://files.erinboake.com/uploads/1/3/0/7/130776718/maxul_zefanenumu_ruxuxotevar_jazomagudigem.pdf
    • http://files.whatareyoucraven.org/uploads/1/3/1/4/131406068/080a12a.pdf
    • http://files.i-teach.info/uploads/1/3/1/4/131454090/aa49bd4cff52a.pdf
    • http://files.michaelshusko.com/uploads/1/3/0/7/130776388/5136409.pdf
    • https://cdn.shopify.com/s/files/1/0434/4630/4920/files/56388549680.pdf
    • https://cdn.shopify.com/s/files/1/0432/2741/4696/files/wink_hub_2_manual.pdf
    • https://cdn.shopify.com/s/files/1/0437/0399/2474/files/78693052152.pdf
    • https://cdn.shopify.com/s/files/1/0430/7573/1607/files/fuvevutupalefuleduvibip.pdf
    • https://cdn.shopify.com/s/files/1/0433/8178/4734/files/voxukuzudetafuj.pdf
    • https://cdn.shopify.com/s/files/1/0434/6006/7480/files/calendario_biodinamica.pdf
    • https://cdn.shopify.com/s/files/1/0433/5170/3706/files/busuxijixorupoduwodosura.pdf
    • https://cdn.shopify.com/s/files/1/0437/6746/4085/files/bard_of_blood_download_free.pdf
    • https://cdn.shopify.com/s/files/1/0428/0070/9791/files/93797009636.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_off000067d8.bin
57bcbaba24014ffd070255524706fb6f3009cf8e54a9e82d78bbba45e4b11728		 pdf-font-stream PDF embedded font (sfnt) at offset 0x67D8 4916 bytes
font_01_sfnt_off0000789f.bin
eaa4410f55f4b4d529a5ab52565a48bb5c618d1deabcaf020239a84b2964c3d5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x789F 9736 bytes
font_02_sfnt_off000099f4.bin
0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333		 pdf-font-stream PDF embedded font (sfnt) at offset 0x99F4 4324 bytes

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