Malicious PDF — malware analysis report

Static analysis result for SHA-256 7ea8376d85807fc5…

MALICIOUS

PDF

33.2 KB Created: 2020-08-29 00:48:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5bbf6c52c4d2e931846975ac521c010e SHA-1: 319c1f0b8bb75ce4ee4295e5476e6d62f34ef15e SHA-256: 7ea8376d85807fc55122e1cd14908f5d176e2f299d194ba4449e19f8501fa610
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/wix?keyword=peace+be+still+lyrics+vanessa+bell+armstrong'. Additionally, another critical heuristic indicates a PDF link farm, suggesting the document is designed to host numerous external links. The document body itself contains this malicious URL, reinforcing the attack pattern. No scripts were extracted, but the presence of the malicious URL is sufficient evidence for this assessment.

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/wix?keyword=peace+be+still+lyrics+vanessa+bell+armstrong
    • https://cdn.shopify.com/s/files/1/0452/6351/9906/files/wnyc_weekly_schedule.pdf
    • https://cdn.shopify.com/s/files/1/0427/5997/9174/files/sasejizazutojegizok.pdf
    • https://cdn.shopify.com/s/files/1/0431/1983/7333/files/fipumitojexila.pdf
    • https://cdn.shopify.com/s/files/1/0433/1359/4526/files/voratas.pdf
    • https://cdn.shopify.com/s/files/1/0433/6563/0102/files/kajosipojimil.pdf
    • https://static.usrfiles.com/ugd/b8c837_17843f1b74f547aab2b79d085ca6893f.pdf
    • https://static.usrfiles.com/ugd/b8c837_301c36b947394c2687d7119b95287eb0.pdf
    • https://cdn.shopify.com/s/files/1/0430/9729/2967/files/table_topics_ideas_toastmasters.pdf
    • https://cdn.shopify.com/s/files/1/0430/6622/8898/files/windsor_park_middle_school_ofsted_report.pdf
    • https://cdn.shopify.com/s/files/1/0432/7840/1700/files/fbi_uniform_crime_reporting_ucr_program.pdf
    • https://cdn.shopify.com/s/files/1/0430/5672/6170/files/do_or_die_heads_or_tailz.pdf
    • https://cdn.shopify.com/s/files/1/0437/0399/2485/files/el_ego_es_el_enemigo.pdf
    • https://cdn.shopify.com/s/files/1/0430/7173/3917/files/xejeludaji.pdf
    • https://cdn.shopify.com/s/files/1/0427/8976/5276/files/depogi.pdf
    • https://cdn.shopify.com/s/files/1/0430/3739/3049/files/autism_spectrum_disorder_symptoms.pdf
    • https://cdn.shopify.com/s/files/1/0431/1564/3031/files/rutumomatasevibigenab.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_off0000462c.bin
703efab1f3ada7a06c42c0efc10bd740770070f874e39d62c9e5c16bb1341519
pdf-font-stream PDF embedded font (sfnt) at offset 0x462C 5424 bytes
font_01_sfnt_off0000588e.bin
9cc1850a863dad1fc849e44efc6c2cce2c610697868f6a2043534b26e5a0f3b0
pdf-font-stream PDF embedded font (sfnt) at offset 0x588E 9056 bytes