Malicious PDF — malware analysis report

Static analysis result for SHA-256 411502f17fef5335…

MALICIOUS

PDF

61.2 KB Created: 2020-08-21 09:59:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 58a910459e634a8432d85d0267c0a2b7 SHA-1: 67f4bb3ba0d80ed4f9ea38093dfcd949dd256b56 SHA-256: 411502f17fef5335180abc9060bfccd370f33e49ac9ab5b8a0a8bc2676664d6f
128 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with a critical heuristic firing for a malicious redirector at 'ttraff.com'. The document body, though heavily obfuscated, contains a reference to this URL. The presence of a large number of external PDF links, many pointing to Shopify, suggests a link farm designed to obscure the ultimate destination. The primary malicious link is 'https://ttraff.com/pify?keyword=zend+avesta+em+portugues+pdf', which likely leads to a phishing page or malware download.

Heuristics 4

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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.com/pify?keyword=zend+avesta+em+portugues+pdf
    • http://files.gardenofhealingmt.com/uploads/1/3/2/3/132302855/warozerakis.pdf
    • http://files.michellewiebe.com/uploads/1/3/0/7/130739601/2245093.pdf
    • http://wowezok.frhsbands.org/uploads/1/3/0/8/130814328/gevekix-suxegiba-tavasobonetoser-suraludiz.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/kuwuvovevikusezavufada.pdf
    • https://cdn.shopify.com/s/files/1/0434/3971/8552/files/kavuguj.pdf
    • https://cdn.shopify.com/s/files/1/0432/4402/8059/files/35530519212.pdf
    • https://cdn.shopify.com/s/files/1/0431/4470/8245/files/49015984229.pdf
    • https://cdn.shopify.com/s/files/1/0435/6558/0437/files/powerboss_pressure_washer.pdf
    • https://cdn.shopify.com/s/files/1/0432/8076/0990/files/teorema_da_bissetriz_interna_exercicios.pdf
    • https://cdn.shopify.com/s/files/1/0434/2746/3324/files/91535267814.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/34888362351.pdf
    • https://cdn.shopify.com/s/files/1/0430/9201/7305/files/bryant_furnace_parts.pdf
    • https://cdn.shopify.com/s/files/1/0435/9743/0941/files/square_root_of_98_in_decimal_form.pdf
    • https://cdn.shopify.com/s/files/1/0430/9506/4730/files/94437312194.pdf
    • https://cdn.shopify.com/s/files/1/0430/9568/7317/files/formulaire_vente_voiture.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 7

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_008_off0000c0af.bin
080830eaaa074ed5f9e8fa22ff5d7019082d44182ff07d44024a0f7465752db2		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0xC0AF 17712 bytes
font_00_sfnt_off00005747.bin
8bc0c710a8feb169367c89e811dfedbafbd38159b96a169fd2c6c688505784fd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5747 4260 bytes
font_01_sfnt_off00006671.bin
4d4d24a19acc8862294879777dc2527d59ad0d8f6732724d53222e3b9127b191		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6671 5344 bytes
font_02_sfnt_off0000788f.bin
326db7afcde3a40933a15f505f2b3e9456295eb521faad5586f903c6f7ce5467		 pdf-font-stream PDF embedded font (sfnt) at offset 0x788F 4060 bytes
font_03_sfnt_off000087cc.bin
14ecd43aeb999e849de6c4430ecb8e83fec5c9045f3637fff34dbf3ad5c328a7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x87CC 6472 bytes
font_04_sfnt_off00009ca6.bin
00eb64c8e0fb329ce6d7515d27c67545299bedceb1d93f8835a4dea86980c6a9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9CA6 10728 bytes
font_06_sfnt_off0000db1c.bin
479b17d4810e61cc5fa1856269950220096ab4b02147f3635ce6cc8c8f804296		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDB1C 2704 bytes

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