Malicious PDF — malware analysis report

Static analysis result for SHA-256 da0729017aec4cc0…

MALICIOUS

PDF

37.8 KB Created: 2020-09-01 14:12:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 892971e1f110c82a1adc24eb39a67b0a SHA-1: 06e1b537a2179e87b3b2dbe52ddd11c06cd47661 SHA-256: da0729017aec4cc0e7e775c71fc6258fc6667d746772dd51f2532708cbb69ace
128 Risk Score

Malware Insights

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

The PDF contains a clear call-to-action disguised as a download link for a game, which redirects to a malicious URL. The PDF_MALICIOUS_REDIRECTOR_LINK heuristic confirms the malicious nature of the redirector. The PDF_SEO_LINK_FARM heuristic indicates a large number of outbound links, many of which point to benign Shopify PDFs, but the primary redirector is malicious. The presence of a download button lure further supports the malicious intent.

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/pify?keyword=bullet+force+full+apk
    • https://cdn.shopify.com/s/files/1/0440/5451/1766/files/ritipogemexugovax.pdf
    • https://cdn.shopify.com/s/files/1/0432/1918/9915/files/lexical_and_contextual_meaning.pdf
    • https://cdn.shopify.com/s/files/1/0461/7902/5059/files/masse_volumique_terre_vgtale.pdf
    • https://cdn.shopify.com/s/files/1/0437/8591/2472/files/47917355493.pdf
    • https://cdn.shopify.com/s/files/1/0434/5279/2982/files/mooladhanam_malayalam_book_free_download.pdf
    • https://static.usrfiles.com/ugd/ac72e0_fc9f0a208a6f44f7a765029e92db18d2.pdf
    • https://cdn.shopify.com/s/files/1/0438/3794/8061/files/jofoxepemil.pdf
    • https://cdn.shopify.com/s/files/1/0430/5354/7677/files/dewojuxolatigebuzov.pdf
    • https://cdn.shopify.com/s/files/1/0461/6821/1608/files/bubbles_game_ing_app.pdf
    • https://cdn.shopify.com/s/files/1/0431/5843/8039/files/schma_de_l_appareil_digestif.pdf
    • https://cdn.shopify.com/s/files/1/0437/1870/5306/files/pmi_lessons_learned_template_free.pdf
    • https://cdn.shopify.com/s/files/1/0433/4567/4389/files/7451118818.pdf
    • https://cdn.shopify.com/s/files/1/0430/4614/2114/files/fdmr_suraj_name_ringtone.pdf
    • https://cdn.shopify.com/s/files/1/0432/6470/4665/files/finra_series_7_study_guide.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_off000055d4.bin
85ab36ae461e27cf231dbca89e754d580102f301064d03cc2822f4dd9946e51c
pdf-font-stream PDF embedded font (sfnt) at offset 0x55D4 4944 bytes
font_01_sfnt_off000066bd.bin
96aa7a49287b689ee54669933e5fb47bd3a29c2f82b0fe21653c77bafd0d28c6
pdf-font-stream PDF embedded font (sfnt) at offset 0x66BD 10520 bytes