Malicious PDF — malware analysis report

Static analysis result for SHA-256 aaecdde0e96e008e…

MALICIOUS

PDF

66.8 KB Created: 2020-08-02 06:06:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 94a8d6d554b4df7a95f1144272900035 SHA-1: 631f401cbbcd6007d4d012f1425663347396ed02 SHA-256: aaecdde0e96e008eb207816da9ad71ab3fbda61368ffb40301d88489403b5138
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, identified as a link farm, directing users to external websites. One of the primary links, 'https://ttraff.ru/pify?keyword=convert+gallons+to+liters', is flagged as a malicious redirector. The document body, though partially corrupted, contains text related to unit conversion, likely serving as a lure to disguise the malicious intent of redirecting users to potentially harmful sites.

Heuristics 3

  • 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.
  • 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=convert+gallons+to+liters
    • http://files.rightchoicesurrogacy.com/uploads/1/3/0/9/130969368/wixixifurubemotuvov.pdf
    • http://files.graciebarrabath.com/uploads/1/3/0/9/130969301/fokumobavav_xifatex_nedamapamorozi_lilil.pdf
    • http://files.westcentralsdachurch.com/uploads/1/3/1/4/131437563/lenoredi.pdf
    • http://files.tonibrannan.com/uploads/1/3/0/8/130813667/zimotenebake.pdf
    • http://files.readnis.com/uploads/1/3/0/7/130738748/6278097.pdf
    • https://cdn.shopify.com/s/files/1/0430/7307/7409/files/62177804698.pdf
    • https://cdn.shopify.com/s/files/1/0432/7948/3044/files/sunex.pdf
    • https://cdn.shopify.com/s/files/1/0437/7988/3170/files/85083082863.pdf
    • https://cdn.shopify.com/s/files/1/0433/2588/2518/files/dodaduvix.pdf
    • https://cdn.shopify.com/s/files/1/0436/1791/0941/files/jutarojo.pdf
    • https://cdn.shopify.com/s/files/1/0430/7540/3936/files/nugek.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/22650439267.pdf
    • https://cdn.shopify.com/s/files/1/0435/8098/1407/files/55325404625.pdf
    • https://cdn.shopify.com/s/files/1/0438/4777/8469/files/jomatosasetimowalixoxepib.pdf
    • https://cdn.shopify.com/s/files/1/0435/1423/2984/files/31439621291.pdf
    • https://cdn.shopify.com/s/files/1/0428/3380/5471/files/64213261760.pdf
    • https://cdn.shopify.com/s/files/1/0432/2764/4072/files/fogoxivudolu.pdf
    • https://cdn.shopify.com/s/files/1/0429/1218/6531/files/69162235412.pdf
    • https://cdn.shopify.com/s/files/1/0435/5896/1315/files/1415529948.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000071bd.bin
a0969c7c518ff36854755a8a308f2174ab44eb9d5dc47bfa7ce4ce1c64536867		 pdf-font-stream PDF embedded font (sfnt) at offset 0x71BD 19888 bytes
font_01_sfnt_off0000b028.bin
73c73643851f42444c85a364003f66929b12f9af97086e5efbd26a87efa75aeb		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB028 4724 bytes
font_02_sfnt_off0000c04a.bin
eb9d17596ac8d1b3e0fe6fa315ee3a2b4e89d37ec281211802ab96b4e185e5e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC04A 14540 bytes
font_03_sfnt_off0000ee25.bin
d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEE25 4324 bytes

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