Malicious PDF — malware analysis report

Static analysis result for SHA-256 80bf566e53726b4f…

MALICIOUS

PDF

36.8 KB Created: 2020-08-17 06:51:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b6f281eff3f2a537812f1679a0020b07 SHA-1: 2640b585fa579cee28bd0d5938341f903bd22eea SHA-256: 80bf566e53726b4f90373e93da3d4876e8742d257e6278b311f3c442155f57c8
154 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with one identified as a malicious redirector. The document body, though heavily obfuscated, contains text that appears to be a lure for the malicious link. The heuristic firings indicate the PDF is designed to redirect users to malicious infrastructure and hosts a large number of external links, likely for SEO manipulation or to host further malicious content.

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/pify?keyword=comethazine+walk+mp4
    • http://files.busybeeorganize.ca/uploads/1/3/0/9/130969004/gojebifazalomo-maxurapokenoxo.pdf
    • http://files.centraleuropeanstringquartet.com/uploads/1/3/1/6/131637307/5073391.pdf
    • http://files.missinternationalaustralia.com.au/uploads/1/3/2/6/132683140/6372502.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0439/1079/1323/files/arthashastra_book_in_english_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0431/0751/6578/files/business_plan_for_a_startup_business_download.pdf
    • https://cdn.shopify.com/s/files/1/0437/6241/7825/files/banjara_song_audio_video.pdf
    • https://cdn.shopify.com/s/files/1/0447/8281/3341/files/55824311594.pdf
    • https://cdn.shopify.com/s/files/1/0435/2330/9727/files/biofertilizer_production.pdf
    • https://cdn.shopify.com/s/files/1/0433/0491/1006/files/xariwut.pdf
    • https://cdn.shopify.com/s/files/1/0435/6934/8763/files/thermoscan_braun_6500_manual_espaol.pdf
    • https://cdn.shopify.com/s/files/1/0440/2629/8533/files/tic_tac_toe_java_code_against_computer.pdf
    • https://cdn.shopify.com/s/files/1/0439/7491/8302/files/betavilira.pdf
    • https://cdn.shopify.com/s/files/1/0431/2412/9953/files/german_language_course_book_a1.pdf
    • https://cdn.shopify.com/s/files/1/0440/0431/1190/files/limokavapabagixotoxezuje.pdf
    • https://cdn.shopify.com/s/files/1/0448/3108/0605/files/5175939944.pdf
    • https://cdn.shopify.com/s/files/1/0429/0835/2679/files/40326068492.pdf
    • https://cdn.shopify.com/s/files/1/0429/7133/2767/files/51423349002.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005101.bin
fbb58b6acfdad9316dbb8728bb65100dceb4122cdef8894cc8d4258c927e7c33		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5101 4984 bytes
font_01_sfnt_off000061f0.bin
42bf9f602a845030a99b5e60a11542791e9be15bb60ff13f7ac9d439c4aa3657		 pdf-font-stream PDF embedded font (sfnt) at offset 0x61F0 10760 bytes

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