Malicious PDF — malware analysis report

Static analysis result for SHA-256 abfc172e8dc07481…

MALICIOUS

PDF

57.8 KB Created: 2020-08-14 01:55:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f0848ecb7df3c83be68f74472d794f26 SHA-1: e5d999b0d3eb5f17a4a4218359023a7e2e55e7cf SHA-256: abfc172e8dc074817581ab9992949629d6308f85475df41ffed23246a7918cb1
152 Risk Score

Malware Insights

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

The PDF contains a high number of embedded links, many pointing to domains associated with link farms and redirectors, such as ttraff.com. The ML classifier also strongly indicated maliciousness. The primary malicious URL identified is https://ttraff.com/pify?keyword=methane+reforming+reaction, which is likely used to funnel victims to further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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=methane+reforming+reaction
    • http://files.key2evolve.com/uploads/1/3/0/8/130874318/zasabuxemer_xawapikiguromik_balasoge.pdf
    • http://losejam.mrhillsscience.com/uploads/1/3/1/4/131437778/4201513.pdf
    • http://wekagib.caseyslife.com/uploads/1/3/0/7/130775403/joxadokujuvu.pdf
    • http://files.phirediamond.com/uploads/1/3/0/7/130738712/suvetegudukoja.pdf
    • http://files.wavelengthscounselling.ca/uploads/1/3/2/6/132695543/f7270de5c126873.pdf
    • https://cdn.shopify.com/s/files/1/0430/5911/8229/files/92136437305.pdf
    • https://cdn.shopify.com/s/files/1/0433/0350/1989/files/72998317495.pdf
    • https://cdn.shopify.com/s/files/1/0429/9292/6883/files/94727564194.pdf
    • https://cdn.shopify.com/s/files/1/0427/5830/8006/files/bojik.pdf
    • https://cdn.shopify.com/s/files/1/0436/9154/0634/files/love_yourself_answer_versions_self.pdf
    • https://cdn.shopify.com/s/files/1/0434/7500/9686/files/the_art_of_storytelling_john_walsh.pdf
    • https://cdn.shopify.com/s/files/1/0430/7773/0464/files/archangel_s_consort_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0434/4312/6438/files/mazebo.pdf
    • https://cdn.shopify.com/s/files/1/0428/4933/7500/files/xibokobeb.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/97454987384.pdf
    • https://cdn.shopify.com/s/files/1/0432/8367/7339/files/99918144487.pdf
    • https://cdn.shopify.com/s/files/1/0432/6581/8789/files/6551548873.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_off00008f4e.bin
27a5a478dd399d96aca387ff469a195301ac6875234129860275c5c21922aab7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8F4E 5088 bytes
font_01_sfnt_off0000a07c.bin
0c664a8d13c2e4340def9f75474a65d69793bcd518f4d53fa365b28482cc6c3e		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA07C 10652 bytes
font_02_sfnt_off0000c514.bin
dfdc6983d3c42b81f9741fa6cdceaab3e97c1fbda00e6274acf933e6ff911e94		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC514 16100 bytes

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