Malicious PDF — malware analysis report

Static analysis result for SHA-256 da9aa4d625852b83…

MALICIOUS

PDF

46.7 KB Created: 2020-08-21 07:17:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7200dc49d75a1af77fde1f88453daf82 SHA-1: d69b87479696c4d03517fd3f77b0a39ce928911e SHA-256: da9aa4d625852b837b37e2511a33057e64705889a3c24e445184f4f26c90857c
120 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.cc, which is likely used to funnel users to malicious content. Additionally, the document exhibits characteristics of a PDF link farm, embedding a large number of links to other PDFs, potentially for SEO manipulation or to obscure the malicious redirector. No scripts were extracted from this sample, limiting further analysis of its behavior.

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=astrophotography+apps+for+android
    • http://milugi.maplerunfriends.com/uploads/1/3/1/4/131409090/tuwexe.pdf
    • http://jemilu.lightonthedesert.org/uploads/1/3/2/7/132712116/fovorekumo.pdf
    • http://files.lindaellenphelps.com/uploads/1/3/1/4/131438819/nogewabitosub.pdf
    • https://cdn.shopify.com/s/files/1/0433/3273/1038/files/zikulasuvubeduzabolak.pdf
    • https://cdn.shopify.com/s/files/1/0446/7684/1635/files/west_bengal_state_lottery_result_today_bangalakshmi.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/beloromawodosuxaso.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/tolipokegegami.pdf
    • https://cdn.shopify.com/s/files/1/0433/3377/9611/files/functional_groups_quiz.pdf
    • https://cdn.shopify.com/s/files/1/0434/4391/2854/files/aprendizagem_organizacional_livros.pdf
    • https://cdn.shopify.com/s/files/1/0429/5753/7439/files/39149871839.pdf
    • https://cdn.shopify.com/s/files/1/0430/0704/9887/files/7762927597.pdf
    • https://cdn.shopify.com/s/files/1/0429/5730/8063/files/genebilivuzavokaj.pdf
    • https://cdn.shopify.com/s/files/1/0429/0940/1251/files/26203369087.pdf
    • https://cdn.shopify.com/s/files/1/0429/6169/8969/files/8486758113.pdf
    • https://cdn.shopify.com/s/files/1/0434/7710/6838/files/40232037906.pdf
    • https://cdn.shopify.com/s/files/1/0437/4436/2647/files/39043843259.pdf
    • https://cdn.shopify.com/s/files/1/0430/8379/2545/files/how_to_log_into_att_router.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_off00007858.bin
67e0ec8bded48cd16d928bc65e1f3ce51f54a0e1c88b308212206e3ee1320ce1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7858 5360 bytes
font_01_sfnt_off00008a97.bin
e751eea40e085bb33832789e5cba18d748c55567fa9f98fe320c82327201bc24		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8A97 10340 bytes

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