Malicious PDF — malware analysis report

Static analysis result for SHA-256 30e0b8fe59b715ca…

MALICIOUS

PDF

38.6 KB Created: 2020-08-23 22:08:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 34eb6ceffe5477a94704072b05e2fc7e SHA-1: 3cd2389f218415575f7db14f623f4c514b64d065 SHA-256: 30e0b8fe59b715ca32c07fda1a531bb2d016e7db372a446c8d39bdb957c64112
152 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic firing for a malicious redirector. The document body, though partially corrupted, contains text related to an 'ophthalmology review' and a URL pointing to 'ttraff.com', a known malicious redirector. This suggests the document is designed to trick users into clicking links that lead to malicious content, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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=ophthalmology+review+a+case+study+approach+pdf
    • http://mafobomuk.delidelicious.com/uploads/1/3/0/8/130874285/ruzope.pdf
    • https://cdn.shopify.com/s/files/1/0428/9898/1030/files/apartmentguide_columbus_ohio.pdf
    • https://cdn.shopify.com/s/files/1/0448/0139/2801/files/discord_server_themes.pdf
    • https://cdn.shopify.com/s/files/1/0453/8423/7224/files/kadijafanijilonexawif.pdf
    • https://cdn.shopify.com/s/files/1/0433/7133/1742/files/simple_dashboard_template_in_excel.pdf
    • https://cdn.shopify.com/s/files/1/0429/4439/7468/files/xowaxugik.pdf
    • https://cdn.shopify.com/s/files/1/0430/9676/8673/files/alarm_app_android_example.pdf
    • https://cdn.shopify.com/s/files/1/0462/2286/8634/files/what_s_up_answer_funny_way.pdf
    • https://cdn.shopify.com/s/files/1/0432/0047/9391/files/avakin_life_game.pdf
    • https://cdn.shopify.com/s/files/1/0437/8640/4000/files/precalculus_with_limits_3e_answers.pdf
    • https://cdn.shopify.com/s/files/1/0434/0360/8214/files/25681573310.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/nidosavexurirevinuno.pdf
    • https://cdn.shopify.com/s/files/1/0429/1995/2550/files/70798955098.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_off0000573f.bin
704a0fccc3297d35f6ad31eca921e6b5135cbc5ead62baca81af0612f03ecc40
pdf-font-stream PDF embedded font (sfnt) at offset 0x573F 5852 bytes
font_01_sfnt_off00006b24.bin
77f0ae89fd18dfc9d2fc3cfeb6627e1185cbbcd4ad485f8990277970b983a4bc
pdf-font-stream PDF embedded font (sfnt) at offset 0x6B24 10076 bytes