Malicious PDF — malware analysis report

Static analysis result for SHA-256 3694d6868c5863cd…

MALICIOUS

PDF

58.3 KB Created: 2020-08-10 19:13:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 76fb591e5c4273ba8241b723a3fcb837 SHA-1: 619ce6ed7c60005277c009f6ca59d1806cb1d90d SHA-256: 3694d6868c5863cd9c0a6697617e6a3fba91e256399ff506d24bf25b57549b2c
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, with one identified as a known malicious redirector. The heuristic 'PDF_SEO_LINK_FARM' indicates a mass external PDF link farm, suggesting an attempt to manipulate search engine results or distribute malicious content. The primary malicious URL is 'https://ttraff.cc/pify?keyword=bioplastico+a+base+de+cascara+de+platano+pdf'. While no scripts were extracted, the sheer volume of links and the presence of a malicious redirector strongly suggest a malicious intent, likely related to SEO manipulation or phishing.

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.cc/pify?keyword=bioplastico+a+base+de+cascara+de+platano+pdf
    • http://files.nsm-glh.com/uploads/1/3/0/7/130739212/3301610.pdf
    • http://files.andthatmeanscomfort.com/uploads/1/3/1/4/131453950/7703264.pdf
    • http://fovube.flatrivermassage.com/uploads/1/3/0/8/130814328/jotetozuderujotuduli.pdf
    • https://cdn.shopify.com/s/files/1/0437/5789/5831/files/fapironotejudadezij.pdf
    • https://cdn.shopify.com/s/files/1/0439/5565/0718/files/ansible_tutorial_tutorialspoint.pdf
    • https://cdn.shopify.com/s/files/1/0435/4523/1509/files/90558112767.pdf
    • https://cdn.shopify.com/s/files/1/0434/1356/9690/files/nepikedegexopifo.pdf
    • https://cdn.shopify.com/s/files/1/0429/5481/7690/files/tunoxozedudasurexil.pdf
    • https://cdn.shopify.com/s/files/1/0439/2786/3464/files/legend_of_mana_rom.pdf
    • https://cdn.shopify.com/s/files/1/0432/4130/8320/files/antonyms_and_synonyms_list_with_telugu_meaning.pdf
    • https://cdn.shopify.com/s/files/1/0437/9102/4280/files/sakemeduwex.pdf
    • https://cdn.shopify.com/s/files/1/0444/4828/4839/files/aluminium_curtain_wall_details.pdf
    • https://cdn.shopify.com/s/files/1/0432/0677/0849/files/22006948180.pdf
    • https://cdn.shopify.com/s/files/1/0431/6158/3776/files/amidah_prayer_in_english.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_off0000a466.bin
63c7bada55d8b597a6870cdeafcb0921951fb51927e63c6b11403273280a7705		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA466 5336 bytes
font_01_sfnt_off0000b688.bin
647dd6700cb158fdff98b4513f0d9669171a78269d51d4c27ef8bd74cc02f888		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB688 11144 bytes

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