Malicious PDF — malware analysis report

Static analysis result for SHA-256 afccdcfbb2e93d4c…

MALICIOUS

PDF

47.2 KB Created: 2020-07-14 09:19:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 40326c2e699833869acd44d6e11ba83d SHA-1: bff4b8ad75f6edd9ef230e574fe1428447b7b38d SHA-256: afccdcfbb2e93d4c081788ca528c175e2ac1857fb1ec4ecbd51fe631a7fe9325
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, with a critical heuristic firing for a PDF link farm. One of these links, 'https://ttraff.cc/wb?keyword=nuking%20the%20moon%20pdf', points to known malicious redirector infrastructure. The document body is heavily obfuscated and does not provide clear textual lures, but the presence of the link farm and malicious redirector strongly suggests an attempt to drive traffic to malicious 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.cc/wb?keyword=nuking%20the%20moon%20pdf
    • http://files.timthompsonelt.com/uploads/1/3/0/7/130739328/3735414.pdf
    • http://files.edwardcooperrealty.com/uploads/1/3/1/1/131164568/kiwepafajilof-didibamo-gotexituz-sotixuzaxu.pdf
    • http://files.jenwilliamsedu.com/uploads/1/3/0/8/130873987/f76a9e78.pdf
    • http://files.judicheco.com/uploads/1/3/1/6/131607712/9605056.pdf
    • http://files.brianbustosart.com/uploads/1/3/0/7/130776483/navugopazol.pdf
    • https://cdn.shopify.com/s/files/1/0428/9092/0099/files/54240006350.pdf
    • https://cdn.shopify.com/s/files/1/0428/6775/3116/files/65155335522.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/lutekalejore.pdf
    • https://cdn.shopify.com/s/files/1/0432/0778/6654/files/serebenabelemonoduxubero.pdf
    • https://daxanud289829636.files.wordpress.com/2020/07/56151402131.pdf
    • https://mekerug368181460.files.wordpress.com/2020/07/budotom.pdf
    • https://wonoged.files.wordpress.com/2020/07/wuzibimakenaku.pdf
    • https://cdn.shopify.com/s/files/1/0430/1396/3939/files/besalepodotiluwe.pdf
    • https://cdn.shopify.com/s/files/1/0429/6572/9429/files/63394351636.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/dosodasanofesawule.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/xoxolesusoziviro.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/xawifakupubegezixezo.pdf
    • https://cdn.shopify.com/s/files/1/0430/3319/8745/files/tigekuzoza.pdf
    • https://cdn.shopify.com/s/files/1/0433/7103/6822/files/7740653098.pdf
    • https://cdn.shopify.com/s/files/1/0428/3600/0931/files/16284649933.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007bdb.bin
ee929f6d48be1c16fbc77cce9e9da88be3db4570b3aa67189fb15f708566c2b8
pdf-font-stream PDF embedded font (sfnt) at offset 0x7BDB 4856 bytes
font_01_sfnt_off00008c3d.bin
d683366275bacd3f56a3fd8e4c7fcdd4acacb81da0df4158a8b8caea937d4a54
pdf-font-stream PDF embedded font (sfnt) at offset 0x8C3D 10304 bytes