Malicious PDF — malware analysis report

Static analysis result for SHA-256 c23ea8bb3d83702b…

MALICIOUS

PDF

66.4 KB Created: 2020-07-31 13:59:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a1d9076a74baea16b32021420bb3e6ea SHA-1: 7286dfea604c9db060e8c3e9674c6947b08aae77 SHA-256: c23ea8bb3d83702b4d5f8d228abac88e14cd8a45c02b06882719f17ec3d63d38
150 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, pointing to 'ttraff.cc'. This URL is used in a SEO link farm strategy, attempting to disguise malicious content as a free download. The document body, though heavily obfuscated, contains text related to 'Atharvana vedam in telugu pdf free download', reinforcing the lure.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.cc/pify?keyword=atharvana+vedam+in+telugu+pdf+free+download
    • http://files.restauranthibiscus.com/uploads/1/3/0/7/130776841/5106130.pdf
    • http://files.williamsportmdcommunityband.org/uploads/1/3/1/3/131383743/6261657.pdf
    • http://files.lovettpianoworks.com/uploads/1/3/0/7/130738712/5672181.pdf
    • http://files.newbeginningswalworth.com/uploads/1/3/0/7/130776841/tunanazopab.pdf
    • http://files.stijndecock.com/uploads/1/3/0/7/130775001/fogulegul_saliw.pdf
    • http://files.stijndecock.c
    • https://cdn.shopify.com/s/files/1/0431/5938/8320/files/xufirelifuposedob.pdf
    • https://cdn.shopify.com/s/files/1/0436/8000/6294/files/82927763057.pdf
    • https://cdn.shopify.com/s/files/1/0433/2843/8427/files/sapiwefatumosizotivuxujuz.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/72163988246.pdf
    • https://cdn.shopify.com/s/files/1/0430/6770/3457/files/74771166834.pdf
    • https://cdn.shopify.com/s/files/1/0431/3913/7697/files/rapakazaxazivogimifajorud.pdf
    • https://cdn.shopify.com/s/files/1/0433/8515/9843/files/nilovoj.pdf
    • https://cdn.shopify.com/s/files/1/0431/6810/4610/files/60686730252.pdf
    • https://cdn.shopify.com/s/files/1/0428/0962/2687/files/domojuvorebanawewobeb.pdf
    • https://cdn.shopify.com/s/files/1/0433/9014/0581/files/54982445349.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_off0000ae88.bin
47b19d1206a2d4984d35b495ba37fe82c9cc96d545e88c0a0e549be15573e24a		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAE88 5300 bytes
font_01_sfnt_off0000c074.bin
874e85277f084b6ac2a5633efd0b6cef29fedbf63ff642f6fa51ae045ddb288e		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC074 7372 bytes
font_02_sfnt_off0000d70b.bin
fdf2839c2c89d44e43937743eb0647639e52db5e5fbb8dfd3a9d7cec31096208		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD70B 10156 bytes

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