Malicious PDF — malware analysis report

Static analysis result for SHA-256 52d1110e9a0b139d…

MALICIOUS

PDF

40.3 KB Created: 2020-09-06 09:07:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: dc794f72a4309ad0e1fbf7a2ad9c6f28 SHA-1: d0c251ad0b6ea930c6a2e3f9f9c4d72f1cdc6233 SHA-256: 52d1110e9a0b139d870e8b3bca4d37b02efb875b90a93d9fdbe512fd00f564d9
128 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic indicating it's a malicious redirector link, specifically pointing to 'https://ttraff.me/pify?keyword=water+bottle+labels+for+wedding+template'. The document also exhibits characteristics of a link farm, with numerous embedded URLs. The presence of a 'download button' heuristic further supports the attack pattern of luring users to click malicious links. No scripts were extracted, and the document body is heavily obfuscated, but the primary malicious intent is clear from the redirector link.

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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/pify?keyword=water+bottle+labels+for+wedding+template
    • https://static.usrfiles.com/ugd/9ef1ea_bd8280769e134a4b941116d7dd103121.pdf
    • https://static.usrfiles.com/ugd/3fb742_d75ef5340f2040daa6b7d3841abe5a01.pdf
    • https://static.usrfiles.com/ugd/a59130_c91f1d540b1c4c6a8783ed67f6502292.pdf
    • https://static.usrfiles.com/ugd/97493d_cafd10d4fa0e4379a267f6897674945f.pdf
    • https://cdn.shopify.com/s/files/1/0440/3740/6870/files/86604615901.pdf
    • https://cdn.shopify.com/s/files/1/0429/9902/1731/files/88887012623.pdf
    • https://cdn.shopify.com/s/files/1/0436/4979/4213/files/21889923477.pdf
    • https://cdn.shopify.com/s/files/1/0434/1573/2376/files/58384471779.pdf
    • https://cdn.shopify.com/s/files/1/0433/8044/1238/files/barney_i_love_you_song.pdf
    • https://cdn.shopify.com/s/files/1/0429/2077/1750/files/operate_personal_computer.pdf
    • https://cdn.shopify.com/s/files/1/0428/5592/3878/files/the_art_of_storytelling_book.pdf
    • https://cdn.shopify.com/s/files/1/0430/8307/1650/files/paxuluvanarap.pdf
    • https://cdn.shopify.com/s/files/1/0459/6229/7503/files/nivigojagaxevuvad.pdf
    • https://cdn.shopify.com/s/files/1/0429/3997/3788/files/vuzup.pdf
    • https://cdn.shopify.com/s/files/1/0432/2800/4507/files/93815084361.pdf
    • https://cdn.shopify.com/s/files/1/0431/3815/4653/files/vomurafebetexutu.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_off00005149.bin
d0e9fcde48e3790087c735f8b953f79cd2ffe164abd1767fc81a8bc08bb41b9f
pdf-font-stream PDF embedded font (sfnt) at offset 0x5149 5392 bytes
font_01_sfnt_off00006399.bin
0238f444aff8a3cf15c30766566645ce49d403f8c3d380d0a5e0d4de43203eae
pdf-font-stream PDF embedded font (sfnt) at offset 0x6399 10068 bytes
font_02_sfnt_off000085fe.bin
4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3
pdf-font-stream PDF embedded font (sfnt) at offset 0x85FE 4324 bytes