Malicious PDF — malware analysis report

Static analysis result for SHA-256 9b06ca5be8f56f9e…

MALICIOUS

PDF

34.7 KB Created: 2020-08-25 17:05:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a979df4b6cda19603a686ac5accd51f1 SHA-1: 39f729f5618b16d8dd3ac1a67440a2d25e223b14 SHA-256: 9b06ca5be8f56f9e0155cc46abb881b30712f47e7ec200dc4d8d53e5595baaef
150 Risk Score

Malware Insights

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

The PDF document was flagged by multiple critical heuristics for containing malicious redirector links and a link farm. The document body contains text related to 'Injustice gods among us old version apk', which is likely a lure to entice users to click the malicious URL. The primary malicious URL identified is https://ttraff.com/pify?keyword=injustice+gods+among+us+old+version+apk, which is part of a redirect chain.

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=injustice+gods+among+us+old+version+apk
    • http://files.kamloopstravelworld.com/uploads/1/3/2/6/132696171/5048826.pdf
    • http://zakusitit.brandyringer.com/uploads/1/3/2/8/132814930/jezuparuleni.pdf
    • http://diboboku.theluckywood.com/uploads/1/3/2/6/132681862/nunapusibafiro.pdf
    • http://files.fourcornersencampment.org/uploads/1/3/2/6/132695646/getililidoboruv-gowagunidojo-tasifuvajiwu.pdf
    • http://jikuxo.albarosa.nz/uploads/1/3/0/8/130874633/60bbc38c5.pdf
    • https://cdn.shopify.com/s/files/1/0432/2125/4312/files/86369928499.pdf
    • https://cdn.shopify.com/s/files/1/0428/8030/3263/files/vasozevasolefabu.pdf
    • https://cdn.shopify.com/s/files/1/0440/8282/3320/files/simplex_2350_master_clock_manual.pdf
    • https://cdn.shopify.com/s/files/1/0446/7235/2419/files/partial_differential_equations_strauss.pdf
    • https://cdn.shopify.com/s/files/1/0450/9663/2472/files/94881020464.pdf
    • https://cdn.shopify.com/s/files/1/0440/3088/6053/files/molewux.pdf
    • https://cdn.shopify.com/s/files/1/0437/9947/8434/files/initial_d_second_stage.pdf
    • https://cdn.shopify.com/s/files/1/0428/9055/9655/files/cajanus_cajan.pdf
    • https://cdn.shopify.com/s/files/1/0435/8068/6497/files/37196066965.pdf
    • https://cdn.shopify.com/s/files/1/0437/6831/6055/files/seselutotunobuvavuse.pdf
    • https://cdn.shopify.com/s/files/1/0430/9506/4730/files/xajukuzubinujatimomesuw.pdf
    • https://cdn.shopify.com/s/files/1/0449/7837/2766/files/gunotekofuvojenefi.pdf
    • https://cdn.shopify.com/s/files/1/0434/7510/7990/files/83177841430.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004968.bin
2d0e3e3cd247f45df3fb2a71ad5eaad56338b738b5283d95b6535c2e3f048b9e
pdf-font-stream PDF embedded font (sfnt) at offset 0x4968 5532 bytes
font_01_sfnt_off00005c27.bin
b89dc80780cdb90435945b25c24ca3dea5e88b0959203c5ce5d8452ebca73293
pdf-font-stream PDF embedded font (sfnt) at offset 0x5C27 9756 bytes