Malicious PDF — malware analysis report

Static analysis result for SHA-256 ebf37acc423607fa…

MALICIOUS

PDF

49.2 KB Created: 2020-08-21 18:55:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 759a5903f47d077961f4546c58eda9bc SHA-1: 4a3c66662468ace897980aae974a6614b1943267 SHA-256: ebf37acc423607fa503fbeb33f3941677d1d250c0a5da25bfa350777aaaa2e78
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, with a critical heuristic identifying it as a PDF link farm. One of the primary links directs to a known malicious redirector service, 'ttraff.ru', which likely serves as a lure for phishing or malware distribution. The document body itself is heavily obfuscated, but the presence of the redirector URL suggests a malicious intent to redirect the user to a harmful site.

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.ru/pify?keyword=argentina+vs+inglaterra+2002+formacion
    • http://viduxej.palestine100.net/uploads/1/3/0/8/130814526/5d8d7fc264a.pdf
    • http://zasorewot.sackindnesscampaign.org/uploads/1/3/2/6/132696030/583c3.pdf
    • http://files.andrewmichaelart.com/uploads/1/3/1/4/131408529/59fa416c9cccb3.pdf
    • https://cdn.shopify.com/s/files/1/0434/3195/2536/files/acrobat_dc_browser_plug_in.pdf
    • https://cdn.shopify.com/s/files/1/0434/1858/3192/files/41686742282.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/93336639176.pdf
    • https://cdn.shopify.com/s/files/1/0430/5040/1945/files/susunazokibipoxap.pdf
    • https://cdn.shopify.com/s/files/1/0435/1072/6815/files/58572572066.pdf
    • https://cdn.shopify.com/s/files/1/0435/3510/6203/files/phenylketonuria_review.pdf
    • https://cdn.shopify.com/s/files/1/0435/2121/2570/files/zagapanazidibunuz.pdf
    • https://cdn.shopify.com/s/files/1/0454/5862/0574/files/aashto_m251_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0437/3640/0037/files/aai_tujha_aashirwad_marathi_movie.pdf
    • https://cdn.shopify.com/s/files/1/0453/5566/3515/files/binomial_theorem_sakshi_education.pdf
    • https://cdn.shopify.com/s/files/1/0428/3888/4519/files/nar_dana_anar_dana_video_song.pdf
    • https://cdn.shopify.com/s/files/1/0429/2087/0044/files/equivalent_fractions_grade_4_worksheets_pdf.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_off00007f25.bin
e4337e68e4121071924ea16f3b226c790cb6961149af4de4378b3ef9889a0248		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7F25 5524 bytes
font_01_sfnt_off000091d9.bin
aa3e40548c48f7feebb7adcc21b0f8fd1d2a9150b81633fff13ac0a65bdb7305		 pdf-font-stream PDF embedded font (sfnt) at offset 0x91D9 11340 bytes

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