Malicious PDF — malware analysis report

Static analysis result for SHA-256 1bc1f8c56bad4192…

MALICIOUS

PDF

44.2 KB Created: 2020-08-16 21:19:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7250e2dd5a2310f889b941f266b890d2 SHA-1: bdd1bdd4967c5e24a9b48fad7c7e9340e1291a3e SHA-256: 1bc1f8c56bad4192d6213b36ebc57a8b865c24f9b637df62267f394b706ff365
120 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.com/pify?keyword=tetrabutylammonium+bromide+safety+data+sheet'. This URL is likely used to redirect the user to a malicious site. The document also contains a large number of embedded links to PDFs hosted on Shopify, suggesting a link farm or SEO poisoning tactic. No scripts were extracted from this sample.

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.com/pify?keyword=tetrabutylammonium+bromide+safety+data+sheet
    • http://files.faithlutheransidney.org/uploads/1/3/0/8/130873794/vujuli_bajefixikigi_musajememoko_wabobufokun.pdf
    • http://files.allactionchocolatefountains.com/uploads/1/3/1/8/131872286/542754.pdf
    • https://cdn.shopify.com/s/files/1/0436/9612/8153/files/63085453114.pdf
    • https://cdn.shopify.com/s/files/1/0432/8354/6267/files/lixipenoremiwo.pdf
    • https://cdn.shopify.com/s/files/1/0430/7012/8277/files/carcassi_25_etudes.pdf
    • https://cdn.shopify.com/s/files/1/0431/7242/9980/files/systems_engineering_textbook.pdf
    • https://cdn.shopify.com/s/files/1/0434/1638/7733/files/building_planning_and_design_books.pdf
    • https://cdn.shopify.com/s/files/1/0430/7773/0464/files/weturot.pdf
    • https://cdn.shopify.com/s/files/1/0433/7329/7814/files/arm_microcontroller_tutorial.pdf
    • https://cdn.shopify.com/s/files/1/0432/1057/1940/files/fonesifowutidepovu.pdf
    • https://cdn.shopify.com/s/files/1/0428/5526/8519/files/18047556837.pdf
    • https://cdn.shopify.com/s/files/1/0430/3791/7345/files/63690630361.pdf
    • https://cdn.shopify.com/s/files/1/0435/6017/3717/files/i_like_me_better_lauv_video.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_off000061fd.bin
93a29cf087a1d4e20b9c2bf1d8d20efbd992aa722c291c426b91c28124f00ca7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x61FD 5220 bytes
font_01_sfnt_off0000738a.bin
a46519cd61250077fd370e80e06b5cb07c47584d9f97e44db57a6e7c632c34ff		 pdf-font-stream PDF embedded font (sfnt) at offset 0x738A 10004 bytes
font_02_sfnt_off000095b4.bin
d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378		 pdf-font-stream PDF embedded font (sfnt) at offset 0x95B4 4324 bytes

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