Malicious PDF — malware analysis report

Static analysis result for SHA-256 44ea07bbb3975b54…

MALICIOUS

PDF

61.2 KB Created: 2020-08-21 04:26:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e2db030ad23072fd4aac1cb9aaf1aa9a SHA-1: 90d8fd6747f2ee82d1f18bcf970323ddec22a9cf SHA-256: 44ea07bbb3975b54406c7ec3d89d1119a6a38de37a52d7183ca694c6a5503f26
130 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded URLs, including one that is part of a potential SEO spam campaign. The document body, though heavily obfuscated, contains the same malicious URL and a benign-looking PDF link, suggesting a lure to external content. No scripts were extracted from this sample.

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=bajrang+dal+song++ringtone
    • http://memix.eclecticartgallery.com/uploads/1/3/1/6/131606490/3084736.pdf
    • http://nikisowag.basilelimeade.com/uploads/1/3/1/8/131858419/1902156.pdf
    • http://files.evaslebanesecooking.com/uploads/1/3/2/6/132695566/suxipevozasib.pdf
    • https://cdn.shopify.com/s/files/1/0437/2440/6935/files/crown_xls_602.pdf
    • https://cdn.shopify.com/s/files/1/0431/4005/5208/files/bticino_living_light.pdf
    • https://cdn.shopify.com/s/files/1/0438/2690/5245/files/4507391337.pdf
    • https://cdn.shopify.com/s/files/1/0428/5969/2191/files/91733986989.pdf
    • https://cdn.shopify.com/s/files/1/0431/6823/5682/files/bilinear_forms_linear_algebra.pdf
    • https://cdn.shopify.com/s/files/1/0434/3008/4760/files/jurassic_park_trespasser_free.pdf
    • https://cdn.shopify.com/s/files/1/0434/0740/9308/files/wunenigigatuvokeru.pdf
    • https://cdn.shopify.com/s/files/1/0430/8307/1650/files/how_to_send_attachment_through_email_in_php.pdf
    • https://cdn.shopify.com/s/files/1/0430/5528/4373/files/vanijototerewax.pdf
    • https://cdn.shopify.com/s/files/1/0430/7245/4807/files/vojafubose.pdf
    • https://cdn.shopify.com/s/files/1/0439/4264/1832/files/rugobomunutaxixosozopasez.pdf
    • https://cdn.shopify.com/s/files/1/0431/6971/0242/files/suronulonavubopo.pdf
    • https://cdn.shopify.com/s/files/1/0431/7439/6058/files/2062207060.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 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005fbc.bin
8ee2dd62afe9c136d3764e82973467808674383fbd87d51cbc521ec3b402f8d6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5FBC 3064 bytes
font_01_sfnt_off00006a86.bin
e43daef1288b801fb3d0e5a3e4693f08d23a8fc278ccf427f8faf5c4376f1ac5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6A86 5116 bytes
font_02_sfnt_off00007bf4.bin
4e3d8c5edaaa377cb4735bbbb739bed841fac56332efc83917a9c3bfb484e1a5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7BF4 7520 bytes
font_03_sfnt_off00009159.bin
75819062e1b1933431357c11e2925d907ebda57c52c1f1dd92593f1338207c77		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9159 14792 bytes
font_04_sfnt_off0000bf20.bin
3818ad609ee50c1d94dbc61f5d10731946e88c926c1c3751f72a6abad526de54		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBF20 16096 bytes
font_05_sfnt_off0000d430.bin
b5888fb7a3bb2c1dd779cde7970787493d74804fcfa7bf2c22229386d1283ff9		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD430 4908 bytes

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