Malicious PDF — malware analysis report

Static analysis result for SHA-256 de7cca0eec8708cb…

MALICIOUS

PDF

42.0 KB Created: 2020-08-28 02:43:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 423dcaab3d0af14b852311d1e97e986c SHA-1: 4b2707176342757180454727edd54ad676c4ca9a SHA-256: de7cca0eec8708cbeadd6509f0260e14931313402687a2983ce3bb36a74955a0
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, with one pointing to a known malicious redirector. The heuristic firings indicate this is a link farm designed to manipulate SEO or redirect users to malicious content. The document body itself is largely unreadable binary data, but it does contain the malicious URL and several other Shopify-hosted PDF links, some of which are confirmed benign but others are unknown.

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=que+epis%25C3%25B3dio++jim+e+pam+primeiro+bei
    • http://files.ccprofessionaltaxservices.net/uploads/1/3/0/9/130969899/gazaxi-vuvonederovu.pdf
    • https://cdn.shopify.com/s/files/1/0431/2160/6818/files/sadijegunezubijujil.pdf
    • https://cdn.shopify.com/s/files/1/0435/6869/3407/files/3rd_grade_math_2_step_word_problems.pdf
    • https://cdn.shopify.com/s/files/1/0434/8713/3860/files/jisilugukexojorudamulig.pdf
    • https://cdn.shopify.com/s/files/1/0435/6728/4379/files/dicionrio_bblico_hebraico_portugus.pdf
    • https://cdn.shopify.com/s/files/1/0430/2821/8019/files/whirlpool_washing_machine_manual_spanish.pdf
    • https://cdn.shopify.com/s/files/1/0432/7594/4091/files/kizefubukazozow.pdf
    • https://cdn.shopify.com/s/files/1/0433/4492/0726/files/frisbee_rules_and_guidelines.pdf
    • https://cdn.shopify.com/s/files/1/0460/0404/3935/files/platform_bed_frames_canada.pdf
    • https://cdn.shopify.com/s/files/1/0432/3550/8381/files/36104174783.pdf
    • https://cdn.shopify.com/s/files/1/0430/0079/1191/files/solutions_acids_and_bases_review_worksheet_answers.pdf
    • https://cdn.shopify.com/s/files/1/0432/1070/3010/files/beech_baron_58_manual.pdf
    • https://cdn.shopify.com/s/files/1/0434/4443/7142/files/set_alarm_for_30_minutes.pdf
    • https://cdn.shopify.com/s/files/1/0428/7817/3343/files/55211355999.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_off00005f30.bin
6d2cdfb1e0975c71678f1ec03fe98cb6e7a1c6415c700989211755322776ab63		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5F30 5484 bytes
font_01_sfnt_off00007177.bin
2573d7f4041982ed2f51292b9ca39dd179a525392a3c4842eb7def777cd0be18		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7177 13112 bytes

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