Malicious PDF — malware analysis report

Static analysis result for SHA-256 a0db4bd1301dfb48…

MALICIOUS

PDF

45.7 KB Created: 2020-09-01 04:09:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ce8bfa0208d42784040a53f84a1e31cc SHA-1: fbf2afad0eaa25a1995f45488694a7e035a868eb SHA-256: a0db4bd1301dfb4826a5678c8232f2836751d3bf0ebd3a1bcbc8be9949b327c2
152 Risk Score

Malware Insights

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

The PDF contains a prominent link that directs users to a URL associated with malicious redirector infrastructure, disguised as a movie download page. The document body, though heavily obfuscated, contains text related to movies and torrents, reinforcing the lure. The presence of numerous external links, many pointing to benign content, suggests a link farm designed to obscure the malicious redirector.

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.me/wix?keyword=movies++with+utorrent+for+free
    • https://static.usrfiles.com/ugd/e5a943_3cf516493f854a32b528a58a09c1ad4d.pdf
    • https://static.usrfiles.com/ugd/b8c837_810a458af2784d059a46912b4c272261.pdf
    • https://static.usrfiles.com/ugd/b8c837_2af84211bd3b42d4a2fc601104296d2d.pdf
    • https://static.usrfiles.com/ugd/09273f_df2c03ba2e924f6d83621c2c513a1d86.pdf
    • https://static.usrfiles.com/ugd/086daf_d065e3c8263243289ff255e11866639b.pdf
    • https://cdn.shopify.com/s/files/1/0461/3924/4697/files/tixavixe.pdf
    • https://cdn.shopify.com/s/files/1/0438/1681/2706/files/61575489940.pdf
    • https://cdn.shopify.com/s/files/1/0433/5117/9416/files/eyewitness_travel_guide_new_york_city.pdf
    • https://cdn.shopify.com/s/files/1/0428/2508/9191/files/gikoxoziwapun.pdf
    • https://cdn.shopify.com/s/files/1/0431/4021/9037/files/15766580787.pdf
    • https://cdn.shopify.com/s/files/1/0432/0165/9043/files/whatsapp_free_laptop.pdf
    • https://cdn.shopify.com/s/files/1/0429/4659/2924/files/lonivedam.pdf
    • https://cdn.shopify.com/s/files/1/0438/9827/3944/files/75438511714.pdf
    • https://cdn.shopify.com/s/files/1/0431/7226/6138/files/92392919515.pdf
    • https://cdn.shopify.com/s/files/1/0431/9064/8996/files/xoxeruremowetaligevamafoz.pdf
    • https://cdn.shopify.com/s/files/1/0431/5486/6333/files/bajirao_mastani_full_movie_worldfree4u.pdf
    • https://cdn.shopify.com/s/files/1/0429/0897/5263/files/uk_bribery_act_deutsch.pdf
    • https://cdn.shopify.com/s/files/1/0438/1851/6637/files/ielts_writing_task_1_file.pdf
    • https://cdn.shopify.com/s/files/1/0431/1737/9745/files/executive_orders_tom_clancy.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006503.bin
ee6a4114fb7b323bfdf7ccfb8284b5de85745c406b0e1044a9803a35e77fed2a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6503 4772 bytes
font_01_sfnt_off00007550.bin
cb9e9c56cc068030586e36bc9d36fe09891a2702973ddddf820c96499522abf5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7550 3972 bytes
font_02_sfnt_off000084e3.bin
4181f9f7b10e64da91ec7bda40096103ab422abd5ba2c840775e620eda463c3d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x84E3 11012 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.