Malicious PDF — malware analysis report

Static analysis result for SHA-256 fb531c2f5454605f…

MALICIOUS

PDF

41.9 KB Created: 2020-08-24 15:15:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3a654c075f43c53781074f7d7daa46ec SHA-1: 79313e59e697399f237d3074f4c907a7439fbde4 SHA-256: fb531c2f5454605f12910da199b25c82612cb4b5dcae8e77a53cc39430e3a059
120 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link that leads to a link farm of other PDFs, indicating a phishing or social engineering attempt. The primary malicious URL is https://ttraff.cc/pify?keyword=simon+chimbetu+song+saina, which is designed to lure users into clicking further. The document body contains garbled text along with the malicious URL and several other PDF links, suggesting an attempt to disguise the malicious intent.

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=simon+chimbetu+song+saina
    • http://files.aattribut.com/uploads/1/3/1/4/131437636/fadoneninodixunojo.pdf
    • http://files.pikeboarddd.com/uploads/1/3/0/7/130776518/6154278.pdf
    • https://cdn.shopify.com/s/files/1/0440/4533/6726/files/delel.pdf
    • https://cdn.shopify.com/s/files/1/0438/3893/1109/files/84042481301.pdf
    • https://cdn.shopify.com/s/files/1/0440/6208/1174/files/rikunosukakekobikirita.pdf
    • https://cdn.shopify.com/s/files/1/0434/3024/8600/files/brother_dcp_l2540dw_specifications.pdf
    • https://cdn.shopify.com/s/files/1/0432/2630/0575/files/garoteluj.pdf
    • https://cdn.shopify.com/s/files/1/0430/9703/0817/files/fixut.pdf
    • https://cdn.shopify.com/s/files/1/0429/3227/3319/files/pejurudubiden.pdf
    • https://cdn.shopify.com/s/files/1/0438/3319/6706/files/new_headway_english_course_beginner_workbook.pdf
    • https://cdn.shopify.com/s/files/1/0439/0027/2792/files/computer_general_knowledge_questions_and_answers_in_english.pdf
    • https://cdn.shopify.com/s/files/1/0430/7868/0737/files/laws_of_exponents_power_rule_worksheet.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_off000065ed.bin
79d2966e20dba43a2e6f801998c0ad19379d352551bdd7fd6dc9a40fcf84d303		 pdf-font-stream PDF embedded font (sfnt) at offset 0x65ED 5328 bytes
font_01_sfnt_off000077d4.bin
7824a0543ce46b3d871ae1c617e90002e7688559d950c1c386543ac7d2f05bf7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x77D4 10352 bytes

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