Malicious PDF — malware analysis report

Static analysis result for SHA-256 f8ac40fdc7d45e02…

MALICIOUS

PDF

34.7 KB Created: 2020-09-06 21:39:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e8d0d9e1915d52604d8515171310ae99 SHA-1: fa56ba9c0efd8cefb49ea2a437136dbe6a781cbf SHA-256: f8ac40fdc7d45e02e9831703760d330cff82d7ba1a7f7d29432abe4c4338ecc4
154 Risk Score

Malware Insights

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

This PDF file was flagged by a machine learning classifier as malicious. It contains a large number of embedded links, with one directly pointing to a known malicious redirector at `https://ttraff.me/wix?keyword=parsec+android+tv`. The majority of the other links point to Shopify domains, suggesting a link farm technique to obscure the true malicious destination. The document body itself is heavily obfuscated and contains some of the same URLs, indicating a likely attempt to lure the user to a malicious site for further exploitation or payload delivery.

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=parsec+android+tv
    • https://cdn.shopify.com/s/files/1/0437/8473/2829/files/juwaduxobanusosusu.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/22650439267.pdf
    • https://cdn.shopify.com/s/files/1/0457/3764/0092/files/arctis_7_cs_go_settings.pdf
    • https://cdn.shopify.com/s/files/1/0435/4100/4439/files/28275213008.pdf
    • https://cdn.shopify.com/s/files/1/0431/6538/4866/files/anniversary_update_windows_10.pdf
    • https://cdn.shopify.com/s/files/1/0432/2417/0659/files/penance_catholic_answers.pdf
    • https://cdn.shopify.com/s/files/1/0437/8161/9870/files/adobe_printer_spooling.pdf
    • https://cdn.shopify.com/s/files/1/0434/7330/5762/files/ladaj.pdf
    • https://cdn.shopify.com/s/files/1/0429/0124/2015/files/auto_bloatware_remover_apk.pdf
    • https://cdn.shopify.com/s/files/1/0431/5034/4352/files/global_reporting_initiative_sustainability_reporting_standards.pdf
    • https://static.usrfiles.com/ugd/d01287_6bd2b0a0315f47769568285b9d672d78.pdf
    • https://static.usrfiles.com/ugd/23b571_a4342e4e322440ab80378f54db3e17dd.pdf
    • https://cdn.shopify.com/s/files/1/0434/5063/0296/files/ruban_phosphorescent_leroy_merlin.pdf
    • https://cdn.shopify.com/s/files/1/0435/4464/1695/files/51929626245.pdf
    • https://cdn.shopify.com/s/files/1/0435/2029/5064/files/arbitrary_waveform_generator_manual.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/13170590630.pdf
    • https://cdn.shopify.com/s/files/1/0438/4918/7493/files/63595268545.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_off00004973.bin
44af53b101e7144e71a886f5eb0d5123f7846047e6a8642d4180aa9496d160fc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4973 4964 bytes
font_01_sfnt_off00005a65.bin
0671a76f721e0ec1ef3290673e5af759d5f2ff60cfccd98677e7b81d28e12748		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5A65 11080 bytes

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