Malicious PDF — malware analysis report

Static analysis result for SHA-256 42f06cb4ee5ea1e2…

MALICIOUS

PDF

99.2 KB Created: 2020-08-11 01:14:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a12b62943b190ae2132d64fc1175dac9 SHA-1: 1829dca1447b38b33a3ab0ca4eacff9a05b6d78b SHA-256: 42f06cb4ee5ea1e2bae71019f3ba809d8e7244493926315429fd7c1e5e619a5a
150 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. Additionally, it exhibits characteristics of a PDF link farm, with numerous links to external PDFs hosted on domains like 'cdn.shopify.com' and other suspicious domains. The document body, though heavily obfuscated, contains the malicious URL, suggesting a lure to trick users into visiting a potentially harmful site for phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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=pdf+bsc+zoology+syllabus
    • http://kerovame.amysackmannon-traditionalquilting.com/uploads/1/3/1/3/131380005/79a379c9.pdf
    • http://telenedon.creativecitychallenge.com/uploads/1/3/1/1/131164250/7c6d6b051e0832.pdf
    • http://gawajov.jeanpenny.com/uploads/1/3/1/4/131453284/852b7b8cf921b.pdf
    • http://files.ghysa.com/uploads/1/3/2/6/132681201/c6eba6.pdf
    • https://cdn.shopify.com/s/files/1/0437/0622/0712/files/sony_str-_de335_manual.pdf
    • https://cdn.shopify.com/s/files/1/0433/5442/3445/files/public_officer_appointment_letter_template.pdf
    • https://cdn.shopify.com/s/files/1/0433/7238/0310/files/masaw.pdf
    • https://cdn.shopify.com/s/files/1/0432/7027/5237/files/fifisifibozufikesawo.pdf
    • https://cdn.shopify.com/s/files/1/0430/8526/7097/files/debonewutuxipesunamove.pdf
    • https://cdn.shopify.com/s/files/1/0431/5627/5362/files/94652949124.pdf
    • https://cdn.shopify.com/s/files/1/0429/1425/0905/files/38365711332.pdf
    • https://cdn.shopify.com/s/files/1/0431/1010/5255/files/pumegosewalafifizudasiti.pdf
    • https://cdn.shopify.com/s/files/1/0427/5752/1574/files/97254232774.pdf
    • https://cdn.shopify.com/s/files/1/0430/5797/1362/files/stewart_calculus_6e.pdf
    • https://cdn.shopify.com/s/files/1/0433/9544/8997/files/54093971485.pdf
    • https://cdn.shopify.com/s/files/1/0436/1843/5229/files/eclectic_paradigm.pdf
    • https://cdn.shopify.com/s/files/1/0440/5071/0693/files/94157890976.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_off00013ab4.bin
c46b0f760cf830d9226267bf272db28434100c7469391345ed5322960912ca8a
pdf-font-stream PDF embedded font (sfnt) at offset 0x13AB4 4916 bytes
font_01_sfnt_off00014b7e.bin
14f7eb6c0874ae06a6495575f7076ddd8a04685c75fe094d42ac9610df26f90c
pdf-font-stream PDF embedded font (sfnt) at offset 0x14B7E 11032 bytes
font_02_sfnt_off000170ee.bin
05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176
pdf-font-stream PDF embedded font (sfnt) at offset 0x170EE 4324 bytes