Malicious PDF — malware analysis report

Static analysis result for SHA-256 33166ac9cb6f47cc…

MALICIOUS

PDF

25.9 KB Created: 2020-10-26 02:57:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7eadd1153d9c6268771ee69bc39df664 SHA-1: 369691e388b1acc3c6d19b8622f00fd27459da79 SHA-256: 33166ac9cb6f47cc99a8694c1da526f847fd61ca5be8f7e5e3c9ca8954520603
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document contains numerous links to external websites, including a known malicious redirector. The embedded content suggests a lure related to an 'achievement guide', likely intended to trick users into clicking the malicious links. The ML classifier also strongly indicated maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://cctraff.ru/strik?keyword=lightning+returns+achievement+guide
    • https://savakorudefipe.weebly.com/uploads/1/3/2/3/132303238/zosipufugotovu-kopeva.pdf
    • https://jeponiruwapin.weebly.com/uploads/1/3/0/7/130776483/6390004.pdf
    • https://turomanusogagi.weebly.com/uploads/1/3/1/4/131453559/dadojiwisixak-watokuzadijigi.pdf
    • https://buximinolid.weebly.com/uploads/1/3/1/3/131381316/wotokefokubexefekev.pdf
    • https://fobopogukigu.weebly.com/uploads/1/3/4/3/134366855/e0c8250.pdf
    • https://xavoxoxuda.weebly.com/uploads/1/3/1/3/131379246/3635439.pdf
    • https://xusawoji.weebly.com/uploads/1/3/0/7/130739635/7122096.pdf
    • https://kuvofexe.weebly.com/uploads/1/3/1/1/131163751/6317.pdf
    • https://zoxuzuxebexot.weebly.com/uploads/1/3/0/9/130969059/jogowezokuvaxu.pdf
    • https://cdn-cms.f-static.net/uploads/4388620/normal_5f8fbd51a5e2a.pdf
    • https://cdn-cms.f-static.net/uploads/4368468/normal_5f87c1b18950f.pdf
    • https://cdn-cms.f-static.net/uploads/4372985/normal_5f926ad55279c.pdf
    • https://tivakoxidedopa.weebly.com/uploads/1/3/0/7/130776298/vowibowafulora.pdf
    • https://papunagaku.weebly.com/uploads/1/3/1/3/131384156/vibegigiwanubep-wekimumage-xikunozisisano.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/dabatisew/falisenizizuxuxafeb.pdf
    • https://s3.amazonaws.com/leguvefu/guvebididutakadi.pdf
    • https://s3.amazonaws.com/wujodibu/ask_fsk_psk_modulation_and_demodulation.pdf
    • https://cdn.shopify.com/s/files/1/0488/2854/7237/files/experimenting_with_babies.pdf
    • https://cdn.shopify.com/s/files/1/0484/0878/9150/files/poetry_analysis_worksheet_7th_grade.pdf
    • https://cdn.shopify.com/s/files/1/0268/7487/2006/files/writing_and_balancing_chemical_equations_answers.pdf
    • https://cdn.shopify.com/s/files/1/0501/8278/3166/files/asphalt_8_data_ios_to_android.pdf
    • http://scripts.sil.org/OFL

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000051d0.bin
9cc3d08798d7a6c12fdb9cb5c7c0e48c9ceb8e3d38e64f5dedbd1eb2cb09f507		 pdf-font-stream PDF embedded font (sfnt) at offset 0x51D0 5320 bytes

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