Malicious PDF — malware analysis report

Static analysis result for SHA-256 218a647c96e6b6c4…

MALICIOUS

PDF

45.5 KB Created: 2020-09-01 00:17:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 71644d8f2b086b7137cdb55df342453f SHA-1: 578c41fa2c903d2a7f4d597c646bc24ab573063d SHA-256: 218a647c96e6b6c4db443e7daa4d8b68e308e6e1303ca3dd722864e8e1f3a713
128 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link, pointing to ttraff.com. The document body, though heavily obfuscated, contains text related to 'Alcatel pixi 4 5045d firmware' and includes the malicious URL, suggesting a lure for users seeking firmware. The presence of a 'download button' heuristic further supports the social engineering aspect of this attack. The file also exhibits characteristics of a link farm, with numerous external PDF links.

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.com/wix?keyword=alcatel+pixi+4+5045d+firmware
    • https://static.usrfiles.com/ugd/173616_ac4041fb8bf949f3b60d3d77012b35c3.pdf
    • https://static.usrfiles.com/ugd/8ab72e_f69f1dba069f42d2a04733bcd9fd87a7.pdf
    • https://static.usrfiles.com/ugd/a107db_8f698cdf33bf49e4bc3f70fbbff105b8.pdf
    • https://static.usrfiles.com/ugd/eb5a6a_f0e195bd5d524361b1668a9db423a812.pdf
    • https://static.usrfiles.com/ugd/913720_50519602c0c64082a0c1de4354b63ed6.pdf
    • https://static.usrfiles.com/ugd/6a7407_689e7fdaf6f7464a91f010822e82d97f.pdf
    • https://cdn.shopify.com/s/files/1/0440/3511/3110/files/android_developer_nanodegree_review.pdf
    • https://cdn.shopify.com/s/files/1/0436/1152/1187/files/23259349602.pdf
    • https://cdn.shopify.com/s/files/1/0431/7138/1405/files/83061942935.pdf
    • https://cdn.shopify.com/s/files/1/0427/4647/8759/files/pimamojikuwobilexuwama.pdf
    • https://cdn.shopify.com/s/files/1/0434/7097/9238/files/grand_tour_season_2_episode_4.pdf
    • https://cdn.shopify.com/s/files/1/0431/4375/7985/files/business_plan_template_sba._gov.pdf
    • https://cdn.shopify.com/s/files/1/0436/6660/4182/files/absceso_hepatico_amebiano_cenetec.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_off00005e8a.bin
af3ae119024a97e5aead4cfd4bfa69de6c27f0ff6dedfd9535eb6bc254095255
pdf-font-stream PDF embedded font (sfnt) at offset 0x5E8A 5624 bytes
font_01_sfnt_off000071c4.bin
ce4ca14272b3c32bec523c6f4c0916d6a545d0059b88d5d91a600a68c2c4f728
pdf-font-stream PDF embedded font (sfnt) at offset 0x71C4 10048 bytes
font_02_sfnt_off0000945b.bin
1ad30dd47fee4d3db7941b4d3dcb324bc5ea629e4afc38f8bd2427cb89640676
pdf-font-stream PDF embedded font (sfnt) at offset 0x945B 16096 bytes