Malicious PDF — malware analysis report

Static analysis result for SHA-256 9b503a4de9f295e9…

MALICIOUS

PDF

38.8 KB Created: 2020-08-11 14:51:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 85fed4a3e5e129e8b63bfe0a8f9fd742 SHA-1: 78374acc1fb751112610317e6263a436a98f127b SHA-256: 9b503a4de9f295e9d0a305166294956e963bedbbf5ba5dac753fb4361ec5f17a
120 Risk Score

Malware Insights

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

The PDF contains a mass of external links, many of which are disguised as book downloads. One of the primary links, 'https://ttraff.ru/pify?keyword=anesthesia+secrets+5th+edition+pdf', is identified as a malicious redirector. This suggests the document is designed to lead users to malicious sites under the guise of providing free PDF content.

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.ru/pify?keyword=anesthesia+secrets+5th+edition+pdf
    • http://files.travelinkcard.com/uploads/1/3/1/4/131437418/2284153.pdf
    • http://dawak.swkp.org.uk/uploads/1/3/2/8/132814930/7618268.pdf
    • http://files.lockmangenetics.com/uploads/1/3/0/7/130775383/nizejab.pdf
    • http://files.elementaryprinciples.net/uploads/1/3/1/6/131637211/fawavaw.pdf
    • http://files.valuable-autographs.com/uploads/1/3/2/7/132741029/b0d94.pdf
    • https://cdn.shopify.com/s/files/1/0429/8306/3715/files/88512013800.pdf
    • https://cdn.shopify.com/s/files/1/0432/7977/7945/files/adjectival_phrases_worksheets.pdf
    • https://cdn.shopify.com/s/files/1/0432/5844/5979/files/38611926486.pdf
    • https://cdn.shopify.com/s/files/1/0437/7359/1703/files/nariku.pdf
    • https://cdn.shopify.com/s/files/1/0437/1136/5288/files/boiler_operator_exam_preparation_guide.pdf
    • https://cdn.shopify.com/s/files/1/0429/1241/5911/files/59107427076.pdf
    • https://cdn.shopify.com/s/files/1/0433/0445/2246/files/dolijejupivapurefizip.pdf
    • https://cdn.shopify.com/s/files/1/0435/8812/4829/files/84736191448.pdf
    • https://cdn.shopify.com/s/files/1/0432/8266/1526/files/botabivupoxel.pdf
    • https://cdn.shopify.com/s/files/1/0438/3119/7856/files/30561268674.pdf
    • https://cdn.shopify.com/s/files/1/0432/2308/9307/files/kuhnhausen_1911.pdf
    • https://cdn.shopify.com/s/files/1/0436/9462/0837/files/gaxuxo.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_off0000594c.bin
c9a924e4348d9135c0bab39e3b7249166c3be6b616ec7f38cea394983f0c4f99		 pdf-font-stream PDF embedded font (sfnt) at offset 0x594C 5324 bytes
font_01_sfnt_off00006b58.bin
fe078ce110f09ea07cc79aabbd7bc5338f5f2475cad0768446cc467517c46199		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6B58 10312 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.