Malicious PDF — malware analysis report

Static analysis result for SHA-256 1fad8069f38a7e32…

MALICIOUS

PDF

45.0 KB Created: 2020-08-12 19:28:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 51c2075e414fa21de48fefca551cb977 SHA-1: 8672797d3ebde2a06088f495971f87f2b8cb9892 SHA-256: 1fad8069f38a7e32bf24f30e34d52884ebd6ab99c408e611b0a034cbf54dc94b
120 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with one specifically identified as a malicious redirector pointing to 'https://ttraff.com/pify?keyword=tipos+de+anemias+pdf'. This indicates a social engineering attempt to trick users into visiting a malicious site under the guise of providing information about anemia types. The document body, though partially corrupted, contains text related to 'Tipos de anemias pdf' and the wkhtmltopdf tool, suggesting it was generated to appear as a legitimate document.

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=tipos+de+anemias+pdf
    • http://files.ibisregalia77.com/uploads/1/3/0/9/130969659/3337e092.pdf
    • http://files.prideontheplains.com/uploads/1/3/2/7/132712093/karuvadurox.pdf
    • http://files.sillassenhalf.com/uploads/1/3/0/9/130969555/bevijidu.pdf
    • http://files.gosynthetic.ca/uploads/1/3/0/9/130969705/d036cb65dd302.pdf
    • https://cdn.shopify.com/s/files/1/0440/6149/1352/files/90399697875.pdf
    • https://cdn.shopify.com/s/files/1/0434/0898/2165/files/xubolosurujikoxutu.pdf
    • https://cdn.shopify.com/s/files/1/0430/6986/6141/files/68857333503.pdf
    • https://cdn.shopify.com/s/files/1/0435/0833/4744/files/augustana_boston_sheet_music.pdf
    • https://cdn.shopify.com/s/files/1/0437/2316/1768/files/css_image_background.pdf
    • https://cdn.shopify.com/s/files/1/0437/4478/8634/files/71918197377.pdf
    • https://cdn.shopify.com/s/files/1/0430/9896/4117/files/4611439638.pdf
    • https://cdn.shopify.com/s/files/1/0433/3246/8904/files/juvigavurovaroxopuz.pdf
    • https://cdn.shopify.com/s/files/1/0439/4647/5678/files/12987180792.pdf
    • https://cdn.shopify.com/s/files/1/0435/7508/3169/files/77976399439.pdf
    • https://cdn.shopify.com/s/files/1/0427/4972/2790/files/tamovusinonimeliwezas.pdf
    • https://cdn.shopify.com/s/files/1/0428/8000/8355/files/baqarah_surah.pdf
    • https://cdn.shopify.com/s/files/1/0430/6763/7917/files/lake_worth_surf_report.pdf
    • https://cdn.shopify.com/s/files/1/0433/2004/9822/files/sample_motivation_letter_for_university_admission.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_off000071dd.bin
0e5745f7f1a55e2421fb8519277e37ab2543b20094da3829b5108665b9ffc9ab
pdf-font-stream PDF embedded font (sfnt) at offset 0x71DD 5008 bytes
font_01_sfnt_off000082d1.bin
2f19fb5b1da55c686754ee192d0e2fb0d731fa60a3e32a40305d5d45a1d978ae
pdf-font-stream PDF embedded font (sfnt) at offset 0x82D1 11132 bytes