Malicious PDF — malware analysis report

Static analysis result for SHA-256 bb7edca3dbd13648…

MALICIOUS

PDF

42.2 KB Created: 2020-08-13 21:44:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4ab60629ed27d1b05474584882a34b1a SHA-1: 2699a2d0e74039efd8eda81bcf1f377cf12c0502 SHA-256: bb7edca3dbd13648d5c0433221b5f6d13c0d9d818574cd930ad151aba2e8d9c7
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.cc/pify?keyword=transforma%25C3%25A7%25C3%25B5es+isotermica+isobarica+isocorica'. Additionally, it exhibits characteristics of a PDF link farm, embedding numerous external PDF links, many hosted on Shopify. This suggests a campaign focused on driving traffic to malicious sites or potentially distributing further malware through these links.

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=transforma%25C3%25A7%25C3%25B5es+isotermica+isobarica+isocorica
    • http://files.bellevilledistrictkennelclub.com/uploads/1/3/1/4/131454986/3851762.pdf
    • http://files.ebenezerunitedchurch.ca/uploads/1/3/1/6/131606262/mozetakopek_bebeniwagawunos_xusimuk_josuxasa.pdf
    • http://files.darajakenya.com/uploads/1/3/1/4/131483020/40d8164a7f99a.pdf
    • https://cdn.shopify.com/s/files/1/0431/6617/1285/files/15868883268.pdf
    • https://cdn.shopify.com/s/files/1/0430/9113/2577/files/77821905151.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/57355052908.pdf
    • https://cdn.shopify.com/s/files/1/0429/6661/4175/files/thinking_in_java_latest_edition.pdf
    • https://cdn.shopify.com/s/files/1/0427/7813/2636/files/95856896558.pdf
    • https://cdn.shopify.com/s/files/1/0431/0482/9602/files/13880031131.pdf
    • https://cdn.shopify.com/s/files/1/0434/5731/4977/files/anne_bronte_books.pdf
    • https://cdn.shopify.com/s/files/1/0431/3353/4357/files/coronary_artery_disease_risk_factors.pdf
    • https://cdn.shopify.com/s/files/1/0434/2834/8060/files/can_t_help_falling_in_love_chords_guitar.pdf
    • https://cdn.shopify.com/s/files/1/0434/4751/7341/files/vegetarian_keto_recipe_book.pdf
    • https://cdn.shopify.com/s/files/1/0435/1367/5928/files/structural_isomerism.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_off00006019.bin
e819f38890c1f6548ddf4ef5ceb964a364a57d22a9b0f5235a5a212c2cfda315		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6019 5484 bytes
font_01_sfnt_off00007215.bin
319263303943ddcf162b2ad0bd570c4e2b0f6769b04fd90f629c8b0870a0f8fb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7215 12724 bytes

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