Malicious PDF — malware analysis report

Static analysis result for SHA-256 c4f064bd260756fd…

MALICIOUS

PDF

124.9 KB Created: 2021-03-31 02:26:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: ba52045adedce1ac67387ae2d076304e SHA-1: 2b5b924e18803992661069cbc475818f47f4fc65 SHA-256: c4f064bd260756fd1db2c3287a88f223861ebec166bb9ea74f05bb4284fc9f2f
154 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier clean score 0.2487

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://leonvi.ru/award?keyword=burmese+script+pdf PDF link annotation
    • http://fesimekipi.iblogger.org/vagiwulanotelepizatid.pdfIn PDF document text
    • https://powelogub.weebly.com/uploads/1/3/1/8/131871449/gugigafikulodo-lagir-sebezamotijil-siripeji.pdfIn PDF document text
    • https://zadisoro.weebly.com/uploads/1/3/4/5/134525292/54fd495cea62580.pdfIn PDF document text
    • https://nedamekiwuj.weebly.com/uploads/1/3/1/3/131379605/1174167.pdfIn PDF document text
    • https://jinobodusere.weebly.com/uploads/1/3/4/7/134722577/7e7d175c0440.pdfIn PDF document text
    • http://teaapple.space/60949738303w7zid.pdfIn PDF document text
    • http://mogudovorezuxok.22web.org/kutemejovodujabezusuvi.pdfIn PDF document text
    • https://zufefofavenubu.weebly.com/uploads/1/3/0/7/130775539/xidipumisuneji.pdfIn PDF document text
    • https://jegiwagoxupida.weebly.com/uploads/1/3/1/3/131379361/2166412.pdfIn PDF document text
    • https://zexuboru.weebly.com/uploads/1/3/2/6/132683252/2355526.pdfIn PDF document text
    • http://vertigoa.online/is_galaxys_edge_in_california_adventurelh04u.pdfIn PDF document text
    • https://pasuwuzo.weebly.com/uploads/1/3/1/4/131438486/vozekavivaso.pdfIn PDF document text
    • https://lobusuzagoti.weebly.com/uploads/1/3/4/4/134470260/1a6ee021341a.pdfIn PDF document text
    • https://jofanota.weebly.com/uploads/1/3/2/3/132302765/bajew.pdfIn PDF document text
    • http://changepass.online/ukulele_strumming_patterns_4_4d4fg6.pdfIn PDF document text
    • https://pinozawekik.weebly.com/uploads/1/3/4/5/134589254/be849bd35689ab.pdfIn PDF document text
    • http://hairsprof.ru/html_and_css_learn_freeo6dtn.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://gafibis.epizy.com/los_compas_y_el_diamantito_legendario_mega.pdfIn PDF document text
    • https://s3.amazonaws.com/mejifavo/58342801438.pdfIn PDF document text
    • https://s3.amazonaws.com/dowesitobuga/lol_renekton_guide_german.pdfIn PDF document text
    • https://s3.amazonaws.com/fokapikow/homelite_chainsaw_parts_for_sale.pdfIn PDF document text
    • http://vofofoduwegakuv.rf.gd/50869991404.pdfIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
    • http://scripts.sil.orgIn PDF document text

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00015409.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15409 8496 bytes
SHA-256: 3fb954af1aa146cec30d5f3cd8272140aebc8f47bd9acf8af571b8eb7fdca092
font_01_sfnt_off00017018.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x17018 5108 bytes
SHA-256: 8193ec53e24f2fc420d8d9db16464e032bade0a0a6a5be7b6383256758c7a14d
font_02_sfnt_off00018168.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x18168 18220 bytes
SHA-256: 1338a7e2a4cd09d24cc8a3ac8ec82a23d46e7fb95810e801bd6296be215aee8d
font_03_sfnt_off0001b5d4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1B5D4 16116 bytes
SHA-256: 6fffb1aeb89666cbcaec4ce24454e19e9ad5757041bd2745d7057949fb60916b
font_04_sfnt_off0001caeb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1CAEB 18052 bytes
SHA-256: 3aeb4af7856951909128c40f4a0ccc24578f7881844dca8418e796062a67a868

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