Malicious PDF — malware analysis report

Static analysis result for SHA-256 8e735ea4d9b445cc…

MALICIOUS

PDF

73.5 KB Created: 2020-08-29 01:24:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 32e100c9ac0e9d7552a3f5b0e6f1aaf8 SHA-1: e45af06e3fdcae9659b510c2a506b3c9f2cbcdaf SHA-256: 8e735ea4d9b445ccc2bfcfb0b79409c1930e62dd028caafe20643e9bbb839df5
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a link to a known malicious redirector at 'https://ttraff.ru/wix?keyword=gta+5+where+to+find+prostitutes'. This URL is presented within the document body, suggesting a lure to trick users into clicking it. The PDF also contains a large number of embedded links, many pointing to Shopify, which is characteristic of SEO spam or link farms used to distribute malicious content. The ML classifier strongly flagged this PDF as malicious.

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.ru/wix?keyword=gta+5+where+to+find+prostitutes
    • https://cdn.shopify.com/s/files/1/0433/9177/8965/files/rewodizuvixuwekanidu.pdf
    • https://cdn.shopify.com/s/files/1/0429/4184/1571/files/19085522196.pdf
    • https://cdn.shopify.com/s/files/1/0432/3606/5438/files/class_12_biology_project_on_diabetes.pdf
    • https://cdn.shopify.com/s/files/1/0431/4683/8167/files/conducted_emission_test.pdf
    • https://cdn.shopify.com/s/files/1/0429/6930/1151/files/loruzima.pdf
    • https://cdn.shopify.com/s/files/1/0433/9036/9959/files/chrome_viewer_hide_toolbar.pdf
    • https://cdn.shopify.com/s/files/1/0434/0816/2974/files/34936865516.pdf
    • https://cdn.shopify.com/s/files/1/0449/3164/5608/files/jopelutupelixuk.pdf
    • https://cdn.shopify.com/s/files/1/0431/1423/4017/files/74348928141.pdf
    • https://static.usrfiles.com/ugd/b8c837_6ceb8b81ccd44384867f06605ed506c9.pdf
    • https://static.usrfiles.com/ugd/b8c837_1505b55887c0471ea6653e924c00a7b1.pdf
    • https://static.usrfiles.com/ugd/b8c837_f4f2d3a8e00f4a29adb9ef6f804fe0dd.pdf
    • https://static.usrfiles.com/ugd/b8c837_89b0327fe74e416990a6dc0013402122.pdf
    • https://static.usrfiles.com/ugd/b8c837_232f1ba59f154013bfdfcf99f5e48480.pdf
    • https://static.usrfiles.com/ugd/b8c837_590ecfa9c212456080d2cc9d8e5beffb.pdf
    • https://static.usrfiles.com/ugd/b8c837_b684c3bbe04f4812baeb904e999776ef.pdf
    • https://static.usrfiles.com/ugd/b8c837_4e9895dc3dcf435687dd0be275f704c8.pdf
    • https://static.usrfiles.com/ugd/b8c837_cebfd4218f284c44a4ef5ce093e729b0.pdf
    • https://static.usrfiles.com/ugd/b8c837_c35585b67ebf4f579ffd9e71b726b3f9.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_off0000e1d7.bin
386e52ea8ac2c8346450c96728e9bd1b45e97f49b47c881737cd3760fcc833d8		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE1D7 5344 bytes
font_01_sfnt_off0000f41c.bin
ff73700c174c7a7399715bb9b5a07ad9b28ba1d23e662e413694c5ca698768ca		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF41C 10792 bytes

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