Malicious PDF — malware analysis report

Static analysis result for SHA-256 1e5fe9cb765eb048…

MALICIOUS

PDF

49.9 KB Created: 2020-08-14 19:16:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 97c0b146012743644c4f2aa9db758b31 SHA-1: 537ebbdf169b4910ddc0f1f15a68abb53763365d SHA-256: 1e5fe9cb765eb0483381db0e6f4c0be8570ce5830ae985c45a2074a54cf34fbb
150 Risk Score

Malware Insights

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

The PDF file contains a prominent link that is disguised as "Kannada latest movies links". This link redirects to a known malicious redirector (ttraff.com), which is designed to lead users to further malicious content. The presence of numerous other PDF links, many hosted on Shopify, suggests a link farm or SEO poisoning tactic to distribute the malicious redirector. The ML classifier also strongly indicated maliciousness.

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.com/pify?keyword=kannada+latest+movies++links
    • http://files.cakedecoratorsguildnsw.org/uploads/1/3/2/7/132712093/7fd2de3.pdf
    • http://files.ammtrail.com/uploads/1/3/0/7/130738836/afec16647f94e.pdf
    • http://files.jamesmdenton.com/uploads/1/3/0/7/130739919/vedid_fukevonebes.pdf
    • https://cdn.shopify.com/s/files/1/0429/8987/9459/files/remedewukax.pdf
    • https://cdn.shopify.com/s/files/1/0432/5189/2381/files/76506625320.pdf
    • https://cdn.shopify.com/s/files/1/0429/1756/0473/files/autocad_drawing_to_converter_free_download_full_version.pdf
    • https://cdn.shopify.com/s/files/1/0430/4211/1650/files/rutabadof.pdf
    • https://cdn.shopify.com/s/files/1/0433/2388/3688/files/sample_occupational_therapy_soap_note.pdf
    • https://cdn.shopify.com/s/files/1/0428/9301/7247/files/satofotomenetuli.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/94766401197.pdf
    • https://cdn.shopify.com/s/files/1/0452/8193/5522/files/bartolome_de_las_casas_obras.pdf
    • https://cdn.shopify.com/s/files/1/0430/5613/6341/files/93317268223.pdf
    • https://cdn.shopify.com/s/files/1/0431/3363/2678/files/potelofexud.pdf
    • https://cdn.shopify.com/s/files/1/0433/4102/1334/files/neoliberalismo_mexico.pdf
    • https://cdn.shopify.com/s/files/1/0431/5670/1348/files/12444883017.pdf
    • https://cdn.shopify.com/s/files/1/0437/8574/8642/files/nevufaxax.pdf
    • https://cdn.shopify.com/s/files/1/0440/5808/3493/files/ice_block_making_business_plan.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
stream_004_off00007b97.bin
438567cfc719f55e1ad6b5393c09f7e74a8aac9afcfaff63854fc36131a7d3b3
decompressed-pdf-stream PDF FlateDecoded stream at offset 0x7B97 10536 bytes
font_00_sfnt_off00006abd.bin
bbcb1374170fe3844caa0d007686b66bb860953bc0561924d85963a5ae8cfb4e
pdf-font-stream PDF embedded font (sfnt) at offset 0x6ABD 4968 bytes
font_02_sfnt_off000097fd.bin
88a0140794cb0d41e22a5c760e7c5ddfd3e0cebe01498cf412487af19cce7121
pdf-font-stream PDF embedded font (sfnt) at offset 0x97FD 9988 bytes