Malicious PDF — malware analysis report

Static analysis result for SHA-256 ea5efe6167837378…

MALICIOUS

PDF

53.1 KB Created: 2020-08-22 09:07:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6bf6c7b5055d1661c4b75e2cddab4e61 SHA-1: d2a68d5ee8440684923fa9adc0446863c4de0cab SHA-256: ea5efe6167837378ffaf6775151c45f6aa2e980675ef2f4cfa2406152b6396b5
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, a technique often used to redirect users to malicious sites. One critical heuristic identified a link to a known malicious redirector, ttraff.com, which is used in conjunction with a keyword related to Android. Another heuristic indicates a PDF link farm, with many links pointing to shopify.com, likely for SEO manipulation or to host further malicious content. The document body contains garbled text but also includes the URL https://ttraff.com/pify?keyword=android+9.+0++iso, reinforcing the malicious redirector finding.

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.com/pify?keyword=android+9.+0++iso
    • http://files.floralgreenspublishing.com/uploads/1/3/0/9/130969818/gekodidex_kexetivet_jifoxixepuw.pdf
    • http://files.davidsonhc.com/uploads/1/3/0/9/130968950/mepezo-tuvegajunuv.pdf
    • http://moroxuga.marissaaltmann.com/uploads/1/3/1/3/131380213/6988302.pdf
    • https://cdn.shopify.com/s/files/1/0428/2672/7580/files/algebra_1_regents_answers_august_2016.pdf
    • https://cdn.shopify.com/s/files/1/0433/7015/2088/files/75759487406.pdf
    • https://cdn.shopify.com/s/files/1/0460/1911/7223/files/fiwefaxip.pdf
    • https://cdn.shopify.com/s/files/1/0438/8116/9051/files/17473860828.pdf
    • https://cdn.shopify.com/s/files/1/0432/0565/6736/files/92900592135.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/22700630349.pdf
    • https://cdn.shopify.com/s/files/1/0429/5501/4298/files/motip.pdf
    • https://cdn.shopify.com/s/files/1/0441/2823/9768/files/project_management_work_breakdown_structure_example.pdf
    • https://cdn.shopify.com/s/files/1/0430/2526/8889/files/beige_colour_formal_shoes.pdf
    • https://cdn.shopify.com/s/files/1/0432/0909/7384/files/tixurepifitazadozenob.pdf
    • https://cdn.shopify.com/s/files/1/0431/9825/1165/files/bemewarevelekowimonudegu.pdf
    • https://cdn.shopify.com/s/files/1/0434/1802/6142/files/18977822730.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_off00009382.bin
882019bcd4c1a1e15a2aed9e26108443bef25dda74192eaa53153a62cca276d3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9382 4896 bytes
font_01_sfnt_off0000a433.bin
a74e559c0b96dbba575f15d88598f641385b2e51b8a84cb79642512c03ef4186		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA433 10372 bytes

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