Malicious PDF — malware analysis report

Static analysis result for SHA-256 51c760a4389c65ee…

MALICIOUS

PDF

55.4 KB Created: 2020-08-05 05:50:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 785c45d77fb537e6471321cd9c00c653 SHA-1: 03d0b48b172404675cc3571b3ee08802240313dc SHA-256: 51c760a4389c65ee634210bbb79c8641c48d7d2f602a0adb6f15092e9d26e501
120 Risk Score

Malware Insights

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

The PDF contains a mass of external links, with one specifically identified as a malicious redirector. The document body, though heavily obfuscated, contains the URL 'https://ttraff.ru/pify?keyword=bodybuilding+training+manual+pdf', which is also flagged as a malicious redirector. This suggests the document's primary purpose is to redirect users to malicious sites under the guise of providing a training manual.

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=bodybuilding+training+manual+pdf
    • http://files.pointofdeparture.pro/uploads/1/3/0/9/130969330/0fd79.pdf
    • http://files.thomasnaturalhorsemanship.com/uploads/1/3/1/4/131437276/wofixumo.pdf
    • http://files.rokalumnaedst.org/uploads/1/3/0/9/130970009/b6ebf.pdf
    • http://files.soulsearchrecords.com/uploads/1/3/2/6/132683154/ravomot.pdf
    • http://files.winslowyorkrite.org/uploads/1/3/1/6/131606343/xolagofotujijuvax.pdf
    • https://cdn.shopify.com/s/files/1/0437/5409/4753/files/87818730561.pdf
    • https://cdn.shopify.com/s/files/1/0428/7738/6918/files/67205698185.pdf
    • https://cdn.shopify.com/s/files/1/0431/1570/8573/files/jogonoteve.pdf
    • https://cdn.shopify.com/s/files/1/0430/8048/2967/files/14436001516.pdf
    • https://cdn.shopify.com/s/files/1/0434/6665/3858/files/50807014776.pdf
    • https://cdn.shopify.com/s/files/1/0430/6498/3703/files/nurofamonolavovera.pdf
    • https://cdn.shopify.com/s/files/1/0433/3407/4523/files/muritosuwi.pdf
    • https://cdn.shopify.com/s/files/1/0431/7511/6964/files/jirufodofudusugiwude.pdf
    • https://cdn.shopify.com/s/files/1/0434/1583/0695/files/takutixomiwejorikad.pdf
    • https://cdn.shopify.com/s/files/1/0431/6607/2994/files/povipogoxi.pdf
    • https://cdn.shopify.com/s/files/1/0431/1531/5351/files/quaint_contraction_crossword.pdf
    • https://cdn.shopify.com/s/files/1/0431/9988/9571/files/sawovivonenesixixa.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_off00009bef.bin
21210f1dff03df0b773b054cc578ffb04f2fdf862ebea6e7e748ae4101885ee6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9BEF 5476 bytes
font_01_sfnt_off0000ae86.bin
6ee1756f2e695055e5e31139e7ecec54b96bc47475ec9b0a32e71c8007c5da2f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAE86 10012 bytes

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