Malicious PDF — malware analysis report

Static analysis result for SHA-256 eb0e98d2b9b90e49…

MALICIOUS

PDF

78.2 KB Created: 2020-08-11 07:39:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b13f4b70f46d208ca4b824e5c9646e25 SHA-1: 42532ee3b57b47a594230bfcea8e96c491935f7c SHA-256: eb0e98d2b9b90e493fd78246cf8a6706181bdb6527cfb414676cc737fab8669f
220 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a link to a known malicious redirector, ttraff.ru, which is disguised as information about 'Java coding language'. This, combined with heuristics indicating an advance-fee scam and a request for recovery secrets, suggests a phishing attempt. The document body, though heavily obfuscated, contains the malicious URL. The primary attack vector is likely a user being tricked into clicking the malicious link.

Heuristics 5

  • 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.
  • Recovery secret / private key request critical SE_SECRET_RECOVERY_LURE
    Document requests recovery phrases, private keys, backup codes, or saved passwords. Requests for these secrets in a document are high-risk.
  • 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.
  • 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.ru/pify?keyword=java+coding+language+pdf
    • http://files.katmaccontent.com/uploads/1/3/1/8/131871852/dfd6eed4865a8.pdf
    • http://files.worker-studio.com/uploads/1/3/0/7/130738889/zatubogixov_zawibugefok_govijoko_baxutawutekak.pdf
    • http://files.knowlton.ca/uploads/1/3/0/7/130740342/e329cf3dabd64.pdf
    • http://najigipag.saipanprivateschool.com/uploads/1/3/1/1/131164250/zebajapaveji-jimobezelog-gutiwupimidab-gedoxezipototu.pdf
    • http://files.onesoulatatime.net/uploads/1/3/1/3/131398000/6780758.pdf
    • https://cdn.shopify.com/s/files/1/0430/0741/0329/files/91113726489.pdf
    • https://cdn.shopify.com/s/files/1/0433/0792/5654/files/bobokosatalomipiru.pdf
    • https://cdn.shopify.com/s/files/1/0429/0835/2679/files/satozogotejekanifopitov.pdf
    • https://cdn.shopify.com/s/files/1/0430/7727/1703/files/45017262550.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/lujodegiduwidixerilaji.pdf
    • https://cdn.shopify.com/s/files/1/0439/3641/5899/files/58312591827.pdf
    • https://cdn.shopify.com/s/files/1/0429/3387/8940/files/vixopukotugemubojis.pdf
    • https://cdn.shopify.com/s/files/1/0432/7538/7043/files/camaro_repair_manual.pdf
    • https://cdn.shopify.com/s/files/1/0436/3105/0915/files/46374934339.pdf
    • https://cdn.shopify.com/s/files/1/0429/6507/4086/files/71100948656.pdf
    • https://cdn.shopify.com/s/files/1/0435/3051/8682/files/30425716331.pdf
    • https://cdn.shopify.com/s/files/1/0441/0490/8952/files/jevogadivudogazinetov.pdf
    • https://cdn.shopify.com/s/files/1/0431/9143/5422/files/dezeletobiladexiwef.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_off0000e343.bin
eeef437abbf60d9cd3a082226c02b0dabcf481b02a5305b8e2c0c9cc7b8c75a2		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE343 4900 bytes
font_01_sfnt_off0000f3fa.bin
2b9f566943c8e32be041a027a48fc3b5f07d27f77af5d7dec274d21b8f42bfa4		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF3FA 12212 bytes
font_02_sfnt_off00011bcf.bin
0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11BCF 4324 bytes

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