Malicious PDF — malware analysis report

Static analysis result for SHA-256 e747a5c12779f86f…

MALICIOUS

PDF

44.3 KB Created: 2020-09-01 04:42:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3159c088b90a60e17204a8cf011660b8 SHA-1: 6114c285cec485780df7536e518b26e85c002ea3 SHA-256: e747a5c12779f86fd5a7534f77e5d4077848c156336076cc34a1f21dbff5eb90
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains embedded links that point to a known malicious redirector infrastructure, disguised as a business model canvas template. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK and PDF_SEO_LINK_FARM strongly indicate malicious intent. The ML classifier also flagged this PDF with high confidence. The document body, though heavily obfuscated, contains references to the malicious URL and benign-looking Shopify URLs, likely part of a link farm to obscure the malicious destination.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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.me/wix?keyword=business+model+canvas+ms+word+template
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/miveguxuxububepevomozit.pdf
    • https://cdn.shopify.com/s/files/1/0434/2205/6600/files/nigonedugixuzukifo.pdf
    • https://cdn.shopify.com/s/files/1/0435/5109/6991/files/dnd_5e_playable_races.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/bijuwosozawubuvenokuzi.pdf
    • https://static.usrfiles.com/ugd/2ac701_9ea02a280fdc45eb938b8e7bc6f4f192.pdf
    • https://static.usrfiles.com/ugd/95089d_63cf98d99943491492548ad4331d91d4.pdf
    • https://static.usrfiles.com/ugd/b8c837_4c38232bcb744ef8919d9fbf7e0ddbee.pdf
    • https://static.usrfiles.com/ugd/353d00_41994689d01a4e799bbb512598707779.pdf
    • https://cdn.shopify.com/s/files/1/0440/8626/3960/files/complete_guide_to_drawing_from_life.pdf
    • https://cdn.shopify.com/s/files/1/0431/5709/4551/files/authority_song_sheet_music.pdf
    • https://static.usrfiles.com/ugd/c345b0_73b28149451849ab8b4e5d538e8b8920.pdf
    • https://static.usrfiles.com/ugd/6f53d7_4e7d6550fe8f432494ad312c0d6f3a9e.pdf
    • https://static.usrfiles.com/ugd/de3d83_623b17c801374fd1bcc30ba9c5309b4e.pdf
    • https://static.usrfiles.com/ugd/0c268c_612922b9f3354bebb6f25595b78b38a7.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_off0000622c.bin
dc12f32953dc382975587e9de8e7690ed89183332bd4200acbccbb974d6af5e7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x622C 5300 bytes
font_01_sfnt_off00007424.bin
73dfa4e183b662a15374e57b6fbcc51537b139225356e8cf64e4469e5d3bde0a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7424 10000 bytes
font_02_sfnt_off0000964b.bin
d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378		 pdf-font-stream PDF embedded font (sfnt) at offset 0x964B 4324 bytes

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