Malicious PDF — malware analysis report

Static analysis result for SHA-256 b9b06c392198811f…

MALICIOUS

PDF

41.0 KB Created: 2020-08-20 13:23:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4eec62a8580cd35b873776d771608526 SHA-1: 367b979fcc594452e1ec89a310a4f0e02bc52635 SHA-256: b9b06c392198811fcc2d120bef52c19a4349dcecfb059f967ff0db842cbc561a
128 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.cc/pify?keyword=alagappan+clinical+medicine+pdf+free'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded links, including one to 'https://cdn.shopify.com/s/files/1/0435/9412/1379/files/serativozulizukobivop.pdf'. The presence of a visual download button lure further supports the malicious intent of directing users to external, potentially harmful content.

Heuristics 4

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=alagappan+clinical+medicine+pdf+free
    • http://files.louisvillehealth.org/uploads/1/3/1/0/131070678/0086c0083644d5.pdf
    • http://files.charmcitypetcrematory.com/uploads/1/3/2/7/132740352/jodilosorelew-tifirukulamul.pdf
    • http://tegopem.grangerlandrfd.com/uploads/1/3/2/7/132741100/43a2b5bff.pdf
    • http://bejipa.bhseducationfoundation.com/uploads/1/3/1/6/131606346/lowibofufoma.pdf
    • http://doxadiw.jadiparadisefarm.com/uploads/1/3/0/8/130814124/bazuxedu-pujiloxokidabun-pixepesu.pdf
    • https://cdn.shopify.com/s/files/1/0435/9412/1379/files/serativozulizukobivop.pdf
    • https://cdn.shopify.com/s/files/1/0433/9807/0426/files/bio_data_form_for_job_application_download.pdf
    • https://cdn.shopify.com/s/files/1/0433/2794/6904/files/pafidikowu.pdf
    • https://cdn.shopify.com/s/files/1/0433/5324/3806/files/11885086339.pdf
    • https://cdn.shopify.com/s/files/1/0435/0862/9659/files/35243759851.pdf
    • https://cdn.shopify.com/s/files/1/0439/2275/1643/files/dusesonagujalepu.pdf
    • https://cdn.shopify.com/s/files/1/0431/5663/5816/files/rikizijip.pdf
    • https://cdn.shopify.com/s/files/1/0436/2023/7475/files/48486043671.pdf
    • https://cdn.shopify.com/s/files/1/0434/2494/0184/files/basic_digital_electronics_tutorial.pdf
    • https://cdn.shopify.com/s/files/1/0433/3492/6495/files/87192691621.pdf
    • https://cdn.shopify.com/s/files/1/0431/5581/6608/files/mowokumowuwuronifa.pdf
    • https://cdn.shopify.com/s/files/1/0432/5366/1851/files/falmouth_jamaica_private_tour_guides.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_off000060a4.bin
4a3de5c4dd91e6b9b7c737d790804733dd3f85338a633f6b2293b449eda8cb52
pdf-font-stream PDF embedded font (sfnt) at offset 0x60A4 5284 bytes
font_01_sfnt_off00007281.bin
31a30ff9fd521cac25769b7674e5a58161ad6df829107f81035900b7505be0ec
pdf-font-stream PDF embedded font (sfnt) at offset 0x7281 10640 bytes