Malicious PDF — malware analysis report

Static analysis result for SHA-256 b0849b0fb974751d…

MALICIOUS

PDF

46.9 KB Created: 2020-08-20 19:29:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8853a332d54cf1d85e837f62f39e5ec7 SHA-1: 39908b18809a16c15de8e4587dc221c9c43542a0 SHA-256: b0849b0fb974751d41c80e11c7461617d0c5d2e3e563e29e098ef283ae356c1f
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, with one heuristic specifically identifying it as a PDF link farm. The primary link points to a known malicious redirector, suggesting an attempt to lure users to malicious content. The document body itself is heavily obfuscated and contains a mix of text and what appears to be binary data, further obscuring its true purpose but reinforcing the malicious nature indicated by the heuristics.

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=abiudi+misholi+nani+atanitazama+video
    • http://files.alexbenarzi.com/uploads/1/3/1/4/131453592/4870172.pdf
    • http://files.feathersandquills.com/uploads/1/3/1/0/131070523/vazogu.pdf
    • http://jipuxem.ohanacarehomesd.com/uploads/1/3/1/8/131856772/c83f4cb0b9ab.pdf
    • http://sisajixer.tylershipmanmemorialcarshow.com/uploads/1/3/2/6/132682051/rabuluxuful-wuvos.pdf
    • http://files.oleksyphotos.com/uploads/1/3/1/4/131453146/9693717.pdf
    • https://cdn.shopify.com/s/files/1/0432/8102/3132/files/64805081661.pdf
    • https://cdn.shopify.com/s/files/1/0430/7465/0261/files/cameroon_food_recipes.pdf
    • https://cdn.shopify.com/s/files/1/0444/5339/6647/files/50_examples_of_collective_nouns.pdf
    • https://cdn.shopify.com/s/files/1/0433/8299/7148/files/solagi.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/magobusiriwolozun.pdf
    • https://cdn.shopify.com/s/files/1/0428/9429/5203/files/the_perfect_crime_locations.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/vejut.pdf
    • https://cdn.shopify.com/s/files/1/0438/2926/4546/files/lunupemotozifidug.pdf
    • https://cdn.shopify.com/s/files/1/0432/7938/4744/files/savipumaxaj.pdf
    • https://cdn.shopify.com/s/files/1/0439/6027/1006/files/ingegneria_genetica_zanichelli.pdf
    • https://cdn.shopify.com/s/files/1/0434/9090/2166/files/kavus.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_off0000504b.bin
fb2a94245a4c3720619b5685ef4b122ce28cb696b7876bfc99e16fa35bc7c479
pdf-font-stream PDF embedded font (sfnt) at offset 0x504B 5208 bytes
font_01_sfnt_off000061e3.bin
8a37a21ac69979014e6e5f9ccc78d42dd3695c98c8d2afab4e1ac65469d4a03f
pdf-font-stream PDF embedded font (sfnt) at offset 0x61E3 15136 bytes
font_02_sfnt_off00009096.bin
9e8409b995ac2b0bb76eb3eb8dd1c90fa55d1c1c8a40bb5daa08ca4080948d13
pdf-font-stream PDF embedded font (sfnt) at offset 0x9096 18776 bytes