Malicious PDF — malware analysis report

Static analysis result for SHA-256 18bdd6127dfbf095…

MALICIOUS

PDF

53.9 KB Created: 2020-08-20 03:58:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2c7f99a5ceef4278abb7c734a6fff1d7 SHA-1: 7672339fa2ef5b342fe8372dd713811d04440ed7 SHA-256: 18bdd6127dfbf09552c71ab12bc55671aa761c2a456eb6d023a826f77c110f27
162 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a large number of embedded links, many of which point to a redirector service known to host malicious content. The document body also contains a direct link to this malicious redirector, disguised as a download button. This suggests a phishing or scam attempt to redirect users to malicious websites.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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
  • 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.cc/pify?keyword=best+couple+love+wallpaper
    • http://files.electivese.nl/uploads/1/3/1/4/131437229/mavoxefemo.pdf
    • http://gupetup.exclusiveallstardanceteam.com/uploads/1/3/1/8/131856158/solepafozogowalataki.pdf
    • http://files.provopressurewashing.com/uploads/1/3/1/1/131164383/ce9a3a17.pdf
    • http://files.benedictegrima.com/uploads/1/3/2/6/132681359/vopukavotepi_guzab_zadojotupozu.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0434/0062/6341/files/91682198155.pdf
    • https://cdn.shopify.com/s/files/1/0428/7237/3411/files/rapapat.pdf
    • https://cdn.shopify.com/s/files/1/0429/2725/9811/files/gokizakageseguzo.pdf
    • https://cdn.shopify.com/s/files/1/0428/9468/8412/files/renaledotejurip.pdf
    • https://cdn.shopify.com/s/files/1/0431/0846/6845/files/rotopibigejiwop.pdf
    • https://cdn.shopify.com/s/files/1/0449/9285/6232/files/although_in_spite_of_despite.pdf
    • https://cdn.shopify.com/s/files/1/0434/2172/8919/files/14824932053.pdf
    • https://cdn.shopify.com/s/files/1/0440/4235/4853/files/46019685274.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/55166802931.pdf
    • https://cdn.shopify.com/s/files/1/0437/1084/1000/files/b._ed_form_2018_rajasthan_university.pdf
    • https://cdn.shopify.com/s/files/1/0435/9503/8877/files/joxopovixiz.pdf
    • https://cdn.shopify.com/s/files/1/0462/2083/7018/files/seventh_day_adventist_church_music.pdf
    • https://cdn.shopify.com/s/files/1/0438/2385/7824/files/antivirus_software_for_pc_windows_10.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/
    • http://scripts.sil.org/OFL
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007798.bin
03d59369e55cbf197c4f2ab4af9b872e60b67f21eb48b1077d11d1650f138062		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7798 5128 bytes
font_01_sfnt_off00008923.bin
51ebeec29509b87aa858d500e37ac8853184703d07d1f913ce36d8e1dc7764c0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8923 1800 bytes
font_02_sfnt_off000091b1.bin
473a30771f2b57f6d29fa4dc73320fbf6e464643386862ab8d7a4275acf2c79c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x91B1 10056 bytes
font_03_sfnt_off0000b409.bin
8680b359cba86e2f6e9a78cf8c0f9e51b009e062d62f51157c34cd29f25a410b		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB409 16340 bytes

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