Malicious PDF — malware analysis report

Static analysis result for SHA-256 c1e28b47ef94c397…

MALICIOUS

PDF

45.9 KB Created: 2020-08-21 20:05:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4bfdfa72167c06df1d198d31186b2062 SHA-1: 4494c2c75e11a6b429c5a38cd76bec24a90d41f8 SHA-256: c1e28b47ef94c397bb7ef1f1f77a69d9e9291e15fbe85637e10c33213c82ccf8
120 Risk Score

Malware Insights

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

The PDF file was identified as malicious due to a critical heuristic firing for a PDF redirector link pointing to 'https://ttraff.cc/pify?keyword=coliform+test+of+water'. Additionally, another critical heuristic detected a PDF link farm with 18 external links, many hosted on shopify.com and other domains. The document body contains garbled text but includes the same suspicious URL, suggesting a lure to a malicious site. No scripts were extracted from this sample.

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=coliform+test+of+water
    • http://jutof.meganclendenan.com/uploads/1/3/2/6/132683292/mibabogunika.pdf
    • http://xokora.speakingevolution.org/uploads/1/3/1/6/131606255/b0ae96a9bc16.pdf
    • http://vuneti.spice-topia.com/uploads/1/3/0/9/130969162/lomili.pdf
    • http://files.silverfitnessct.com/uploads/1/3/1/4/131453350/jinonezaxeruxemi.pdf
    • http://xomibesum.flamethrowerbbqco.com/uploads/1/3/1/4/131438641/5e43ccf.pdf
    • https://cdn.shopify.com/s/files/1/0440/5549/4806/files/83109765714.pdf
    • https://cdn.shopify.com/s/files/1/0429/7162/7673/files/gudizuzuronifemizamudezi.pdf
    • https://cdn.shopify.com/s/files/1/0435/2966/6724/files/81747973022.pdf
    • https://cdn.shopify.com/s/files/1/0428/6038/0327/files/26885105466.pdf
    • https://cdn.shopify.com/s/files/1/0427/8360/4903/files/37789999778.pdf
    • https://cdn.shopify.com/s/files/1/0430/6750/6849/files/tikabuxowodidu.pdf
    • https://cdn.shopify.com/s/files/1/0427/5427/7532/files/68211370079.pdf
    • https://cdn.shopify.com/s/files/1/0428/8957/6614/files/bosch_serie_4_manual_dishwasher.pdf
    • https://cdn.shopify.com/s/files/1/0431/4877/1477/files/papabakunafiwegonoxav.pdf
    • https://cdn.shopify.com/s/files/1/0435/3222/2615/files/former_10th_mountain_division_commanders.pdf
    • https://cdn.shopify.com/s/files/1/0438/1478/1088/files/xifep.pdf
    • https://cdn.shopify.com/s/files/1/0433/9938/1146/files/basic_arrhythmias.pdf
    • https://cdn.shopify.com/s/files/1/0428/9432/7961/files/tobapexamovuposepiwebofig.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_off0000695a.bin
cbc7fd96037c7b04b2df186574338a5bcc39a7f50ec440b07ef741414efa518f
pdf-font-stream PDF embedded font (sfnt) at offset 0x695A 4712 bytes
font_01_sfnt_off00007966.bin
116d50560e109ef8e612ffcc3d0a9c83fde0a602d3bb5047c7fe7ce929481e54
pdf-font-stream PDF embedded font (sfnt) at offset 0x7966 10184 bytes
font_02_sfnt_off00009c26.bin
ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230
pdf-font-stream PDF embedded font (sfnt) at offset 0x9C26 4324 bytes