Malicious PDF — malware analysis report

Static analysis result for SHA-256 03abb1ca2d51423d…

MALICIOUS

PDF

48.8 KB Created: 2020-08-16 18:00:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4c3008ec7a18a3dc6ad0cc3bfebb5b90 SHA-1: 3af6128c0b410655ff827d60de7438837a95c976 SHA-256: 03abb1ca2d51423d5c301050e6c04baeaa48430d2a9bd942bab6ac6b33ed9f43
154 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, many pointing to Shopify domains hosting other PDFs, but one critical link directs to a known malicious redirector. The document body, though heavily obfuscated, contains text related to 'Java ee jdk 1.7 64 bit' and the malicious URL, suggesting a lure to download potentially harmful software. 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.cc/pify?keyword=java+ee+jdk+1.+7++64+bit
    • http://files.jodiehommercounseling.com/uploads/1/3/0/7/130739835/kodake_zaxim.pdf
    • http://files.jrrobsonathletics.com/uploads/1/3/0/7/130776755/1710884.pdf
    • http://files.criteriummarketing.com/uploads/1/3/1/1/131163904/fcefef629d.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0438/6432/6299/files/valowotisitunesetakobu.pdf
    • https://cdn.shopify.com/s/files/1/0435/1826/3448/files/solaxanufugibamajovapo.pdf
    • https://cdn.shopify.com/s/files/1/0435/5152/2977/files/14257085257.pdf
    • https://cdn.shopify.com/s/files/1/0440/7836/6885/files/damojomonoz.pdf
    • https://cdn.shopify.com/s/files/1/0433/6877/5841/files/modefusinulipata.pdf
    • https://cdn.shopify.com/s/files/1/0433/4046/4281/files/registery_first_aid.pdf
    • https://cdn.shopify.com/s/files/1/0438/5924/7264/files/59751466381.pdf
    • https://cdn.shopify.com/s/files/1/0435/4850/8311/files/book_scavenger.pdf
    • https://cdn.shopify.com/s/files/1/0429/2126/3271/files/96148200370.pdf
    • https://cdn.shopify.com/s/files/1/0440/7682/6789/files/pengertian_belimbing_wuluh.pdf
    • https://cdn.shopify.com/s/files/1/0434/3883/3816/files/critical_theory_today_lois_tyson_download.pdf
    • https://cdn.shopify.com/s/files/1/0430/0963/8553/files/xopaxokavone.pdf
    • https://cdn.shopify.com/s/files/1/0440/7663/0181/files/bt_cotton_project.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007341.bin
bc9fa8f44bd4117e94b43200b1ff94af858f32a4e0c57945c562b40c0e761406		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7341 4820 bytes
font_01_sfnt_off000083cc.bin
c004ec7b5ed222052787dae8b614231fa521b6e5ae389c7169d7a41a147f7b6b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x83CC 10772 bytes
font_02_sfnt_off0000a894.bin
4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA894 4324 bytes

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