Malicious PDF — malware analysis report

Static analysis result for SHA-256 e6e67b6c79c0f640…

MALICIOUS

PDF

43.3 KB Created: 2020-08-24 05:57:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 42ca63163720fc6deacafe81308b1f85 SHA-1: 7b0cb89346aad0215669a6e0ea64ee90d4a94a8d SHA-256: e6e67b6c79c0f64052af9627b8676125f1816aa31d120de8f7f7cd6ec4eb0455
120 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.cc/pify?keyword=baidu+browser+free++pc'. This URL is likely intended to lead the user to a malicious site. The document also contains a large number of embedded links, many hosted on Shopify, which is flagged as a PDF link farm. The document body text, though partially corrupted, contains the string 'Baidu browser free pc', reinforcing the lure. No scripts were extracted from this sample.

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=baidu+browser+free++pc
    • http://files.jkxtremehardscaping.com/uploads/1/3/1/6/131637357/xijuwebatazopep.pdf
    • http://fapefe.warmanddryuk.com/uploads/1/3/1/4/131453358/3598969.pdf
    • https://cdn.shopify.com/s/files/1/0429/3669/6999/files/30809469934.pdf
    • https://cdn.shopify.com/s/files/1/0435/2960/1175/files/botojeme.pdf
    • https://cdn.shopify.com/s/files/1/0440/8272/5029/files/past_modal_verbs_exercises_with_answers.pdf
    • https://cdn.shopify.com/s/files/1/0438/2107/2546/files/vofobomakabelewikupef.pdf
    • https://cdn.shopify.com/s/files/1/0427/9762/9596/files/22931218631.pdf
    • https://cdn.shopify.com/s/files/1/0432/4841/8971/files/supamo.pdf
    • https://cdn.shopify.com/s/files/1/0440/4215/8245/files/duxijojitirurokujiv.pdf
    • https://cdn.shopify.com/s/files/1/0431/4942/6845/files/48921887963.pdf
    • https://cdn.shopify.com/s/files/1/0431/0512/4516/files/politik_pluralisme_indonesia.pdf
    • https://cdn.shopify.com/s/files/1/0466/2794/6661/files/93464661846.pdf
    • https://cdn.shopify.com/s/files/1/0430/6727/7469/files/merepiteba.pdf
    • https://cdn.shopify.com/s/files/1/0432/6889/8966/files/house_rent_agreement_form.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005fb6.bin
64d725fa30bda1ef792f6c4d64c384b1f3778b7fbe5cded520f12fb5be26fc30		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5FB6 5096 bytes
font_01_sfnt_off00007122.bin
1a4b5f8229990c04e1cd9f4130728d74ad4e529664c024468c334d0af05c6b13		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7122 9676 bytes
font_02_sfnt_off00009238.bin
05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9238 4324 bytes

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