Malicious PDF — malware analysis report

Static analysis result for SHA-256 96843b03d4ea75ce…

MALICIOUS

PDF

61.1 KB Created: 2020-08-30 15:32:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4a1f619ddc830e3fab792fb73f4b3287 SHA-1: e6835dbc8faf233d9f9c6273fd0848a5d9d69cff SHA-256: 96843b03d4ea75ce4be4edf82553ac8c2c4c099fdcda7761012c91b1862309c0
120 Risk Score

Malware Insights

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

The PDF file was identified as malicious due to a critical heuristic firing for a link to a known malicious redirector. Additionally, it contains a large number of external links, suggesting a link farm or SEO manipulation tactic. The primary malicious IOC is the redirector URL, which likely leads to further malicious content.

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/wix?keyword=poema+a+un+angel
    • https://cdn.shopify.com/s/files/1/0428/8249/8716/files/90039687853.pdf
    • https://cdn.shopify.com/s/files/1/0428/7568/2972/files/chadariya_jini_re_jini_audio_song.pdf
    • https://cdn.shopify.com/s/files/1/0433/4669/0203/files/18980330417.pdf
    • https://cdn.shopify.com/s/files/1/0435/2396/5080/files/zolopoxebevezazatujam.pdf
    • https://cdn.shopify.com/s/files/1/0430/3935/9127/files/bobarerere.pdf
    • https://cdn.shopify.com/s/files/1/0431/8927/2725/files/pejarotok.pdf
    • https://cdn.shopify.com/s/files/1/0428/0818/0895/files/filizovanaselizidomipad.pdf
    • https://cdn.shopify.com/s/files/1/0428/6844/1254/files/sotodipozibof.pdf
    • https://cdn.shopify.com/s/files/1/0431/6472/9512/files/zidomavot.pdf
    • https://cdn.shopify.com/s/files/1/0434/1055/5041/files/eenadu_telugu_news_paper_file_download.pdf
    • https://cdn.shopify.com/s/files/1/0433/2378/5370/files/john_c_hull_9th_edition.pdf
    • https://cdn.shopify.com/s/files/1/0433/5671/7206/files/free_editable_certificate_templates_for_word.pdf
    • https://cdn.shopify.com/s/files/1/0431/7921/2959/files/osteoporosis_ingles.pdf
    • https://cdn.shopify.com/s/files/1/0429/6926/8373/files/bopevif.pdf
    • https://cdn.shopify.com/s/files/1/0430/4447/0945/files/hasi_ban_gaye_lyrics_female.pdf
    • https://cdn.shopify.com/s/files/1/0430/2100/9053/files/79833267268.pdf
    • https://cdn.shopify.com/s/files/1/0431/3504/1693/files/ipad_markup_apple_pencil.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_off0000b428.bin
9fc1def24a64d54392088fb876fa70c951c4f0ae71c1b3023360993bba526395		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB428 4732 bytes
font_01_sfnt_off0000c42e.bin
2a1f17efa89356dbeccaccdc8343541ba76fe423fac02b27fb71ec598d0b3881		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC42E 10332 bytes

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