Malicious PDF — malware analysis report

Static analysis result for SHA-256 90f831e26c1dcc3a…

MALICIOUS

PDF

86.2 KB Created: 2020-08-08 05:06:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: adac2315f258cb6f2da69710e7d7daac SHA-1: 52c2208294af0b7599fd67df5d9e976391b7c165 SHA-256: 90f831e26c1dcc3a55b5e92f42ce45e17c304f902ee29ef9ba6bd106965d27b6
188 Risk Score

Malware Insights

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

The PDF file contains multiple heuristics indicating it is a lure for advance-fee scams and phishing. It includes a link to a known malicious redirector, ttraff.cc, which is likely used to direct users to a scam or phishing site. The document body, though heavily obfuscated, contains text related to 'cashless banking system' and a URL that appears to be part of a link farm, further supporting the scam lure.

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.
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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=the+impact+of+cashless+banking+system+in+nigeria+pdf
    • http://files.millersgardenservices.co.uk/uploads/1/3/1/6/131606128/lavezoxajuf.pdf
    • http://files.truewealthfg.com/uploads/1/3/2/7/132710687/migejowo.pdf
    • http://files.liveandletlive.co.nz/uploads/1/3/2/6/132696174/merepurojafone-nafulinuzisejer-movirekorid.pdf
    • http://files.rebeccajoymohrlang.com/uploads/1/3/1/3/131381679/1801471.pdf
    • https://cdn.shopify.com/s/files/1/0435/7944/1307/files/gasagunojiduviwe.pdf
    • https://cdn.shopify.com/s/files/1/0433/7503/4520/files/97970012422.pdf
    • https://cdn.shopify.com/s/files/1/0435/4349/4807/files/84277175211.pdf
    • https://cdn.shopify.com/s/files/1/0432/3698/2944/files/vagutajiwunadiguxusele.pdf
    • https://cdn.shopify.com/s/files/1/0435/2675/0357/files/sukimugizolezu.pdf
    • https://cdn.shopify.com/s/files/1/0428/7207/8499/files/vce_further_maths_textbook.pdf
    • https://cdn.shopify.com/s/files/1/0427/5198/3783/files/28736545286.pdf
    • https://cdn.shopify.com/s/files/1/0430/9201/7305/files/academic_year_calendar_2020_20.pdf
    • https://cdn.shopify.com/s/files/1/0435/7426/3963/files/72975400919.pdf
    • https://cdn.shopify.com/s/files/1/0431/3782/6973/files/51084833533.pdf
    • https://cdn.shopify.com/s/files/1/0431/9094/3904/files/84904011353.pdf
    • https://cdn.shopify.com/s/files/1/0431/4995/1125/files/sopurijiwebororelesawub.pdf
    • https://cdn.shopify.com/s/files/1/0431/9775/9643/files/volegokipogo.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_off00010706.bin
db97c8c45b6b3abae531876e4cf0239e4e0e1798d17b4bbf1e9833ff95280d41		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10706 5824 bytes
font_01_sfnt_off00011aab.bin
e103551676f0b6318ac497e36ff86952e98d2fc199b80140a0a966285c26e41a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11AAB 15504 bytes

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