Malicious PDF — malware analysis report

Static analysis result for SHA-256 a6c67eff5e33f45d…

MALICIOUS

PDF

120.4 KB Created: 2020-08-22 03:44:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e6842e85871d718b335ee3bf913076a1 SHA-1: 245f6122827d517f44bd1cd0fc3587502f9b6f1a SHA-256: a6c67eff5e33f45df76513d09e61d2a806dd102a8fcfc2ab38d98c16ecc16124
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/pify?keyword=botanica+oculta+en+medicina+pdf+gratis'. This URL is likely used to redirect the user to a malicious site. The document body also contains this URL, reinforcing the malicious intent. The presence of a large number of external PDF links suggests a link farm for SEO poisoning or distributing 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.cc/pify?keyword=botanica+oculta+en+medicina+pdf+gratis
    • http://pojeb.88jamz.com/uploads/1/3/2/8/132816202/2d465bf4baa47.pdf
    • http://files.mywiscofarmstead.com/uploads/1/3/1/8/131856706/1272319.pdf
    • http://nuzodape.jjohnsonartist.com/uploads/1/3/1/6/131606295/cd7dd.pdf
    • http://files.arlingtonmsband.com/uploads/1/3/1/6/131606087/ddee7.pdf
    • http://files.dakotawoodcrafts.com/uploads/1/3/0/8/130813876/9610132.pdf
    • https://cdn.shopify.com/s/files/1/0433/0127/3758/files/allah_loves_me_book.pdf
    • https://cdn.shopify.com/s/files/1/0459/6485/3408/files/piriviwozesowusonosivele.pdf
    • https://cdn.shopify.com/s/files/1/0430/6498/3701/files/body_systems_quiz.pdf
    • https://cdn.shopify.com/s/files/1/0427/5906/1670/files/tosumakujesibisolovif.pdf
    • https://cdn.shopify.com/s/files/1/0430/2936/4889/files/that_was_easy_sound.pdf
    • https://cdn.shopify.com/s/files/1/0434/6360/6429/files/38552860509.pdf
    • https://cdn.shopify.com/s/files/1/0431/0722/1670/files/amelita_rae_libros_gratis.pdf
    • https://cdn.shopify.com/s/files/1/0432/8731/4585/files/punctuation_worksheets_grade_10.pdf
    • https://cdn.shopify.com/s/files/1/0433/0127/3758/files/clash_of_clans_private_server_apk_updated.pdf
    • https://cdn.shopify.com/s/files/1/0432/9180/3801/files/mekanism_joules_to_rf.pdf
    • https://cdn.shopify.com/s/files/1/0438/2703/6322/files/system_drawing_color.pdf
    • https://cdn.shopify.com/s/files/1/0440/0627/7278/files/binidugu.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_off0001963d.bin
aa4ba6a6cd6e0f924797987e7f4caf913cfaa58fb2503d0e3b2327053e78ec92		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1963D 5524 bytes
font_01_sfnt_off0001a8f1.bin
0f8039abee343692719a1a086f365c2b713e63b432f750f6d9d8276d6c101424		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1A8F1 12864 bytes

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