Malicious PDF — malware analysis report

Static analysis result for SHA-256 e891fd43d053a031…

MALICIOUS

PDF

42.5 KB Created: 2020-08-21 05:00:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 84ee42f85d9e9fd59e4c692dd6da13f4 SHA-1: f2b753a48ab1f7daa5901eecd69d6e337c58f3e0 SHA-256: e891fd43d053a0319f968aece07406dab2e0d938b689343db56dae11e468e9ec
120 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/pify?keyword=chrome+application++for+laptop'. This URL is likely part of a phishing or malware distribution chain. The document also exhibits characteristics of a link farm, with numerous embedded links to PDF files, many hosted on Shopify. The document body, though heavily obfuscated, contains the same suspicious URL and mentions 'Chrome application for laptop', reinforcing the lure.

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=chrome+application++for+laptop
    • http://files.elawithmsionut.com/uploads/1/3/0/7/130775808/nepuribuselimurewu.pdf
    • https://cdn.shopify.com/s/files/1/0431/0725/4439/files/lawson_s_landing_fishing_report.pdf
    • https://cdn.shopify.com/s/files/1/0433/1382/3909/files/fijeku.pdf
    • https://cdn.shopify.com/s/files/1/0436/7994/0761/files/72988312635.pdf
    • https://cdn.shopify.com/s/files/1/0433/9780/8285/files/29794362151.pdf
    • https://cdn.shopify.com/s/files/1/0464/7039/8110/files/wajenasogupabizofodiket.pdf
    • https://cdn.shopify.com/s/files/1/0430/6753/9623/files/44573736854.pdf
    • https://cdn.shopify.com/s/files/1/0434/7753/2822/files/accomplishment_report_intramurals.pdf
    • https://cdn.shopify.com/s/files/1/0451/8277/9541/files/17650338288.pdf
    • https://cdn.shopify.com/s/files/1/0431/0741/8273/files/negotedojedokuzedu.pdf
    • https://cdn.shopify.com/s/files/1/0433/1172/6750/files/cavalier_coke_machine.pdf
    • https://cdn.shopify.com/s/files/1/0432/7846/7238/files/patient_consent_form_for_case_report.pdf
    • https://cdn.shopify.com/s/files/1/0433/3276/3801/files/83519998245.pdf
    • https://cdn.shopify.com/s/files/1/0439/1626/3592/files/12631384678.pdf
    • https://cdn.shopify.com/s/files/1/0435/1583/8618/files/ripiwoxo.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_off0000672c.bin
71d346b93eb2010fdd2a75f88d3d6e3f529b62d56a4dbbf28da269062c45521f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x672C 4980 bytes
font_01_sfnt_off000077f5.bin
85b9e8d38a1c13cd87e632184d4107e88d32968836ee3795fb0377f5de24f8ce		 pdf-font-stream PDF embedded font (sfnt) at offset 0x77F5 10896 bytes

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