Malicious PDF — malware analysis report

Static analysis result for SHA-256 1bc0ebd1b21ddcee…

MALICIOUS

PDF

54.4 KB Created: 2020-08-21 15:39:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1cd83407897124ca3dfd29a49bd5adea SHA-1: 1d01b921aaa5385c2b42c311ebfdac4dbb77598e SHA-256: 1bc0ebd1b21ddcee98ea276112bf65ea1ebaf19c1e8b245681fb4adaa7a40281
130 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link disguised as a business proposal form, which is a common lure for phishing attacks. The document also features a large number of external PDF links, many pointing to benign Shopify domains, but at least one leading to a known malicious redirector. The presence of a 'download button' heuristic further supports the social engineering aspect of this attack.

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.ru/pify?keyword=jeevan+amar+plan+855+proposal+form
    • http://kavezodek.ohwhataluckyfish.com/uploads/1/3/2/6/132681352/7921448.pdf
    • http://files.alexsarkisian.com/uploads/1/3/2/6/132680994/71905.pdf
    • http://files.nevrapoint.com/uploads/1/3/2/8/132815767/3311596.pdf
    • http://vupuxibul.arielzylberman.com/uploads/1/3/2/3/132303195/1116166.pdf
    • https://cdn.shopify.com/s/files/1/0437/8591/2477/files/business_plan_excel_templates.pdf
    • https://cdn.shopify.com/s/files/1/0437/5976/3617/files/attenuators_in_microwave.pdf
    • https://cdn.shopify.com/s/files/1/0434/3640/8982/files/essential_english_grammar_in_use_3rd_edition.pdf
    • https://cdn.shopify.com/s/files/1/0427/7446/2631/files/vijatabegovagidinufof.pdf
    • https://cdn.shopify.com/s/files/1/0435/8130/9085/files/jipagi.pdf
    • https://cdn.shopify.com/s/files/1/0431/0689/3985/files/apache_tomcat_for_windows_8.pdf
    • https://cdn.shopify.com/s/files/1/0436/0539/3571/files/refugukamilelemujagisa.pdf
    • https://cdn.shopify.com/s/files/1/0434/6154/2045/files/psd_calendar_2015.pdf
    • https://cdn.shopify.com/s/files/1/0437/2286/6839/files/14873170263.pdf
    • https://cdn.shopify.com/s/files/1/0435/2271/9912/files/sirazemekejipudolelos.pdf
    • https://cdn.shopify.com/s/files/1/0430/4096/4759/files/hansel_and_gretel_grimm_brothers.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000071fd.bin
79bfb74fc7bf13b7aed8c55dc51dd99b98c1057fe593c9020297f8f90b33d651
pdf-font-stream PDF embedded font (sfnt) at offset 0x71FD 5416 bytes
font_01_sfnt_off00008455.bin
b91f3c26f37c28538ed09035cbea6f9221827f1e30b50c452f08cc820bcc167b
pdf-font-stream PDF embedded font (sfnt) at offset 0x8455 3720 bytes
font_02_sfnt_off00008fb8.bin
84f9f193e0a5dc48c197724ccc4236b807a8ed1c70260295de399056f0b07a3c
pdf-font-stream PDF embedded font (sfnt) at offset 0x8FB8 10312 bytes
font_03_sfnt_off0000b329.bin
8c0b55d65cd3035533d57c41dee0365ecead343b7c109ed3fb9a2d69ab5367f3
pdf-font-stream PDF embedded font (sfnt) at offset 0xB329 6908 bytes