Malicious PDF — malware analysis report

Static analysis result for SHA-256 c5f2c77bbdff6de2…

MALICIOUS

PDF

61.1 KB Created: 2020-07-24 17:54:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1a7d122a0ca12bd5a21ae0faeaf7bb0b SHA-1: 6280487f2f0bc2f3cc934bce8f296ac12cd24b69 SHA-256: c5f2c77bbdff6de222720fe81d530f98a66cd59a28b488444e86fa13ecb5a039
128 Risk Score

Malware Insights

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

The PDF contains a significant number of external links, many of which point to domains associated with link farms and redirectors. One such URL, 'https://ttraff.com/pify?keyword=guided+math+small+group+lesson+plan', is flagged as a malicious redirector. The presence of a 'download button' heuristic further suggests a lure to entice users to click these links. The document body is heavily obfuscated and contains no readable text to provide further context.

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=guided+math+small+group+lesson+plan
    • http://files.goldnchromefishing.com/uploads/1/3/0/9/130969981/2006089.pdf
    • http://files.kullaf.com/uploads/1/3/1/4/131453861/penuvexegikaxovegid.pdf
    • http://files.jacksonbands.com/uploads/1/3/1/6/131636930/dd665372f.pdf
    • http://files.hopeheritagedays.org/uploads/1/3/1/1/131163777/vogakoxot_goveri.pdf
    • https://cdn.shopify.com/s/files/1/0433/8502/8758/files/15936325417.pdf
    • https://cdn.shopify.com/s/files/1/0429/7526/4924/files/14198875221.pdf
    • https://cdn.shopify.com/s/files/1/0434/0505/0021/files/xatasufuv.pdf
    • https://cdn.shopify.com/s/files/1/0431/2878/3002/files/65289882978.pdf
    • https://cdn.shopify.com/s/files/1/0433/0009/4112/files/88694039161.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/kubogofire.pdf
    • https://cdn.shopify.com/s/files/1/0431/4379/0760/files/xojoji.pdf
    • https://cdn.shopify.com/s/files/1/0431/5460/4198/files/80886515767.pdf
    • https://cdn.shopify.com/s/files/1/0434/1845/2120/files/81316578118.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_off00008954.bin
4d1dd44e5d5b094e43546cc4806f8b55450749b8bb28a58fc58bbc0475ce3751
pdf-font-stream PDF embedded font (sfnt) at offset 0x8954 5288 bytes
font_01_sfnt_off00009b1e.bin
47729626dab05303d455320e2c56787280697c2a5c03d24353169ff9c0d0def1
pdf-font-stream PDF embedded font (sfnt) at offset 0x9B1E 4180 bytes
font_02_sfnt_off0000ab47.bin
528f9dfd089bbd1ed07b4e6d37b84f87a61e9c15f9c64a73798019362d431dd9
pdf-font-stream PDF embedded font (sfnt) at offset 0xAB47 10560 bytes
font_03_sfnt_off0000cf8a.bin
6b88312ab20f16ed5ba8367fd5ab0c939dfa35f392f4b011c98774957b1de67e
pdf-font-stream PDF embedded font (sfnt) at offset 0xCF8A 16452 bytes