Malicious PDF — malware analysis report

Static analysis result for SHA-256 578b186a5f1ef003…

MALICIOUS

PDF

44.0 KB Created: 2020-08-07 13:01:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9513d5628d68b45213e4dca2c2e5482b SHA-1: 6eabe2d9454a65821d221958919612ce6f4fcf0d SHA-256: 578b186a5f1ef00378ff88f87e79f756157ce6752b49043fb11389cb9964bfc7
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to a redirector service. The primary heuristic indicates that the PDF links to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains the URL that triggered the malicious redirector heuristic. This suggests the document's purpose is to drive traffic to malicious sites.

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=asphalt+concrete+tests+pdf
    • http://files.artontheriverph.com/uploads/1/3/1/8/131871907/f6f898061c86.pdf
    • http://files.browncountyhumaneshelter.com/uploads/1/3/0/7/130740116/10886.pdf
    • http://nolewafux.matersports.com/uploads/1/3/2/6/132696030/4307779.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/93236297381.pdf
    • https://cdn.shopify.com/s/files/1/0430/3526/3138/files/tivojululiviki.pdf
    • https://cdn.shopify.com/s/files/1/0432/7895/8758/files/jaxowaxejalelamikot.pdf
    • https://cdn.shopify.com/s/files/1/0434/0131/4454/files/convert_to_word_online_zamzar.pdf
    • https://cdn.shopify.com/s/files/1/0434/6845/6086/files/biwilatetarite.pdf
    • https://cdn.shopify.com/s/files/1/0429/1405/4300/files/ncert_accountancy_book_class_11_part_2.pdf
    • https://cdn.shopify.com/s/files/1/0447/3890/4218/files/circular_motion_formulas.pdf
    • https://cdn.shopify.com/s/files/1/0436/5228/4566/files/rabugemikepetorofofiraso.pdf
    • https://cdn.shopify.com/s/files/1/0432/7853/2758/files/austronesian_migration.pdf
    • https://cdn.shopify.com/s/files/1/0430/1219/4463/files/gezidobodegekobonupake.pdf
    • https://cdn.shopify.com/s/files/1/0429/1044/9830/files/bafosegutugularut.pdf
    • https://cdn.shopify.com/s/files/1/0437/8004/7010/files/common_psychiatric_disorders.pdf
    • https://cdn.shopify.com/s/files/1/0435/9222/0840/files/native_american_flute_plans.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_off00006e4a.bin
a9d6b5f1ee8fdb2f4e06c7e34e52aec382212f4cba74acc55fb9e9cb22eeafae		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6E4A 5232 bytes
font_01_sfnt_off00008010.bin
ab07d383457aedd799327fb83969297ef9c0385f40a120bc80a7ae14940941ac		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8010 10208 bytes

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