Malicious PDF — malware analysis report

Static analysis result for SHA-256 0d8e125d625fba21…

MALICIOUS

PDF

41.3 KB Created: 2020-08-05 04:28:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: dafa955d586640b1fb2b71186e417b06 SHA-1: 2decccf634361f60d622b2018a5f90fa1409cf8c SHA-256: 0d8e125d625fba21ef837d31937c5825ce026d311900392567d7b25667f2fd7c
234 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link farm and a specific malicious redirector URL, disguised as a bank document. The heuristic 'SE_PAYMENT_REDIRECT_LURE' strongly suggests a business-email-compromise pattern aiming to trick users into fraudulent transactions. The presence of numerous external links, including a known malicious redirector, indicates an attempt to lead the user to a compromised or malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • Payment redirection / bank-detail change lure high SE_PAYMENT_REDIRECT_LURE
    Document describes new or changed bank, wire, ACH, IBAN, SWIFT, or routing instructions — a high-value business-email-compromise 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.cc/pify?keyword=sbi+bank+pass+book+pdf
    • http://files.americanhomesteader.net/uploads/1/3/0/7/130738889/1538275.pdf
    • http://files.100menvictoria.org/uploads/1/3/2/6/132682862/piliresep-sopudeke.pdf
    • http://xilefove.mileslens.com/uploads/1/3/1/3/131381204/1598381.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0447/0204/0217/files/anganwadi_teacher_application_form_download.pdf
    • https://cdn.shopify.com/s/files/1/0432/8760/9497/files/79013156378.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/jepomosojavadoji.pdf
    • https://cdn.shopify.com/s/files/1/0431/5083/5876/files/45540763029.pdf
    • https://cdn.shopify.com/s/files/1/0446/4531/8819/files/calidad_de_vida_en_el_trabajo_en_mexico.pdf
    • https://cdn.shopify.com/s/files/1/0429/0933/5715/files/kanoganup.pdf
    • https://cdn.shopify.com/s/files/1/0431/7118/4794/files/75675420671.pdf
    • https://cdn.shopify.com/s/files/1/0429/9853/0202/files/17366798573.pdf
    • https://cdn.shopify.com/s/files/1/0437/7716/3416/files/93561225371.pdf
    • https://cdn.shopify.com/s/files/1/0434/5449/6935/files/69785842068.pdf
    • https://cdn.shopify.com/s/files/1/0429/2601/4620/files/debabobe.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/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006305.bin
98ceeced5ebbc8da61e20b88583de4ca1b2d9605a4e245ea581b314511f8c3dc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6305 5212 bytes
font_01_sfnt_off000074d8.bin
4379567a7a2c99693d67d5b9b23da0b5e567aa09fd3167237814c89481b7f57c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x74D8 10424 bytes

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