Malicious PDF — malware analysis report

Static analysis result for SHA-256 bd1b87c9bec40f03…

MALICIOUS

PDF

61.6 KB Created: 2020-08-28 07:41:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: fbf81686b40d1d99f0765c4d575add07 SHA-1: 9136d659efaed3344394bae53aada4a9409a6941 SHA-256: bd1b87c9bec40f035b0453dcbc50dfc9d52e605f8069e3047c144de47ac86166
152 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/pify?keyword=capitulo+miercoles+11+la+reine+du+fl'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded URLs, many hosted on cdn.shopify.com. The ML classifier also strongly flagged this PDF as malicious. The primary attack vector appears to be luring the user to click on the malicious link within the document.

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=capitulo+miercoles+11+la+reine+du+fl
    • http://files.freeportfirstparish.org/uploads/1/3/0/9/130969129/ninij_firezunukolowu.pdf
    • http://files.msimone.com/uploads/1/3/0/9/130969357/8a895f6b1a.pdf
    • http://gusikuta.peterboroughlawsociety.co.uk/uploads/1/3/1/6/131637016/7829554.pdf
    • http://vogoxob.zerowastelady.com/uploads/1/3/1/8/131857631/buluropugo.pdf
    • https://cdn.shopify.com/s/files/1/0431/7921/2959/files/risebamasakagefi.pdf
    • https://cdn.shopify.com/s/files/1/0440/1935/1710/files/90689356802.pdf
    • https://cdn.shopify.com/s/files/1/0435/5381/6728/files/tejururibowexisonu.pdf
    • https://cdn.shopify.com/s/files/1/0433/1631/4277/files/bise_fsd_9th_result_2020_gazette_download.pdf
    • https://cdn.shopify.com/s/files/1/0432/7977/7952/files/51185670177.pdf
    • https://cdn.shopify.com/s/files/1/0432/2652/9956/files/can_t_delete_google_search_history_android.pdf
    • https://cdn.shopify.com/s/files/1/0431/5496/4629/files/biology_of_belief_ebook.pdf
    • https://cdn.shopify.com/s/files/1/0459/7209/5136/files/integers_order_of_operations_worksheets.pdf
    • https://cdn.shopify.com/s/files/1/0436/9956/8795/files/80109821582.pdf
    • https://cdn.shopify.com/s/files/1/0438/3234/4736/files/ios_icon_sizes_cheat_sheet.pdf
    • https://cdn.shopify.com/s/files/1/0462/7061/1613/files/bejavaxixefilevonuwutejo.pdf
    • https://cdn.shopify.com/s/files/1/0461/8584/0803/files/6_days_7_nights_movie_tamil_dubbed.pdf
    • https://cdn.shopify.com/s/files/1/0433/2018/0894/files/vipotijomagudurebebalar.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_off0000b14b.bin
49ef5d1cd2a6b32e19516df313166d9d5ccc065787e33c37236438de7fd7d1ac		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB14B 5256 bytes
font_01_sfnt_off0000c313.bin
15d95a3494a16c94ee6c6b2a6c85bc0717957b9d3079a7fcdac75b9c78a0db79		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC313 11100 bytes

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