Malicious PDF — malware analysis report

Static analysis result for SHA-256 54ebc1d1f1076900…

MALICIOUS

PDF

37.3 KB Created: 2020-08-25 13:26:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8017276d69231d75b607f18f25e43703 SHA-1: cb1e188fab00d408d74372427350cb2c9e075fca SHA-256: 54ebc1d1f1076900070a560e9a99412aee305c968c9d892369fc3c13476469d7
120 Risk Score

Malware Insights

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

The PDF file contains a link farm pointing to numerous external PDFs, with one critical heuristic identifying a link to a known malicious redirector. The document body, though heavily obfuscated, contains the URL 'https://ttraff.com/pify?keyword=phenyl+chloroformate+msds', which is likely intended to lead the user to malicious content. The presence of multiple Shopify URLs suggests an attempt to disguise the malicious intent within a large number of seemingly benign links.

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=phenyl+chloroformate+msds
    • http://files.reikifortheplanet.com/uploads/1/3/2/3/132302815/5645773.pdf
    • http://files.rhodofestival.com/uploads/1/3/1/1/131164488/dotubobu-wusemev-sulaxu-vurijiterufenaw.pdf
    • http://mutitosi.sisterssangha.org/uploads/1/3/0/9/130969521/rurodaduro.pdf
    • http://nafazo.charmed-liebling.com/uploads/1/3/1/3/131384306/1179549.pdf
    • http://damat.impactingcolorado.com/uploads/1/3/0/8/130874289/vivobitaput-kirituxotamafa-gumabisiwozofef-sesepug.pdf
    • https://cdn.shopify.com/s/files/1/0463/3378/8317/files/job_interview_questions_and_answers_communication_skills.pdf
    • https://cdn.shopify.com/s/files/1/0432/0083/9842/files/lexixukurabuso.pdf
    • https://cdn.shopify.com/s/files/1/0432/2567/7982/files/critical_race_theory_tenets.pdf
    • https://cdn.shopify.com/s/files/1/0432/1725/6603/files/pumibojeb.pdf
    • https://cdn.shopify.com/s/files/1/0432/8180/9558/files/gogodoxe.pdf
    • https://cdn.shopify.com/s/files/1/0432/4727/2098/files/ravikosape.pdf
    • https://cdn.shopify.com/s/files/1/0437/4292/0865/files/pea_shooter_gungeon.pdf
    • https://cdn.shopify.com/s/files/1/0433/6664/5916/files/casio_graphing_calculator_apk.pdf
    • https://cdn.shopify.com/s/files/1/0429/2391/7475/files/85586728238.pdf
    • https://cdn.shopify.com/s/files/1/0427/9166/5830/files/chaotic_neutral_chart_template.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_off0000519f.bin
15fda024e004167510c70ac795ec9de29f8fed68d47339c73b5298786e6af8bd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x519F 5364 bytes
font_01_sfnt_off000063a4.bin
10cc96f65f41f6352d54486348280fde230d607be8a67695635db7d151b67a46		 pdf-font-stream PDF embedded font (sfnt) at offset 0x63A4 10836 bytes

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