Malicious PDF — malware analysis report

Static analysis result for SHA-256 26d6c89f2a63d1a3…

MALICIOUS

PDF

39.7 KB Created: 2020-08-28 16:20:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a546ef1b21896dcccbb930aaa84f0766 SHA-1: ead88fab6f25ef95298e69f4423fd4ffd5c82af9 SHA-256: 26d6c89f2a63d1a35667fbfbbb3e3f01ec95a469e7ea8dbc94fe44768884fb21
150 Risk Score

Malware Insights

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

The PDF document was flagged by a machine learning classifier and heuristics indicate it contains a mass external link farm. One of the embedded URLs, 'https://ttraff.com/pify?keyword=onan+emerald+generator+parts', is identified as a known malicious redirector. The document body contains garbled text and what appears to be a reference to the redirector URL, suggesting a lure to external malicious content.

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=onan+emerald+generator+parts
    • http://seluzo.genawave.com/uploads/1/3/1/3/131398177/detanu_kavawape_zopenuri.pdf
    • http://fuletub.trinitywellnesscharleston.com/uploads/1/3/0/9/130969525/mobotumape.pdf
    • http://files.easternsloperanch.com/uploads/1/3/2/6/132681404/3588728.pdf
    • http://files.pocolocosocks.com/uploads/1/3/0/7/130776573/pudewujikeworujovi.pdf
    • https://cdn.shopify.com/s/files/1/0432/8056/4392/files/clinical_examination_book_for_medical_students.pdf
    • https://cdn.shopify.com/s/files/1/0432/9563/7659/files/cox_contour_box_manual.pdf
    • https://cdn.shopify.com/s/files/1/0433/1618/3205/files/kaxakukefujufabidedusaf.pdf
    • https://cdn.shopify.com/s/files/1/0429/1746/2182/files/75514988395.pdf
    • https://cdn.shopify.com/s/files/1/0463/3110/1345/files/amadeus_altea_reservation_desktop.pdf
    • https://cdn.shopify.com/s/files/1/0431/4955/7917/files/cartoon_in_english.pdf
    • https://cdn.shopify.com/s/files/1/0432/6568/7717/files/86799131388.pdf
    • https://cdn.shopify.com/s/files/1/0430/3575/4650/files/35052946932.pdf
    • https://cdn.shopify.com/s/files/1/0433/3161/6923/files/jokefamumekafifo.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_off00005c69.bin
97ad926737d6dec3e80c291fb0c04c88673ebaecaf56fc29284f18db7c62b9d4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5C69 5308 bytes
font_01_sfnt_off00006e55.bin
eceee7622f125b950df13342e2201e005621611a8cc41730ca2c287862783351		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6E55 10516 bytes

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