Malicious PDF — malware analysis report

Static analysis result for SHA-256 5cb97dc9838b61c5…

MALICIOUS

PDF

42.1 KB Created: 2020-08-04 20:12:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 36d8445f0adfc2f5b087ae0c4ba98a8b SHA-1: b6ff0fd23845f3e97189b22a8a68d83ae0935de5 SHA-256: 5cb97dc9838b61c5283c0a5052327db3c3491b2ab6634f7b0394fd47f89c87c4
154 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many pointing to benign Shopify domains, but one critical link directs to a known malicious redirector. The ML classifier also strongly indicated maliciousness. The document body, though heavily obfuscated, contains the malicious URL, suggesting the PDF's purpose is to trick users into visiting this URL, likely for phishing or malware delivery.

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=behringer+x32+compact+tutorial+pdf
    • http://files.toolbox2teach.com/uploads/1/3/0/9/130969404/5750257.pdf
    • http://files.kazmetixartistry.com/uploads/1/3/0/8/130873855/8560475.pdf
    • http://files.affordabletowingnearme.com/uploads/1/3/1/3/131383297/pazijinageganoz_lerotudajoginoz_suxevoxiw.pdf
    • http://files.artgalleryofsnovalley.com/uploads/1/3/2/7/132740692/5372745.pdf
    • http://files.mahomdub.com/uploads/1/3/2/7/132740778/lasin.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0437/7794/9848/files/ecologia_e_gesto_ambiental.pdf
    • https://cdn.shopify.com/s/files/1/0437/1103/7589/files/12318886635.pdf
    • https://cdn.shopify.com/s/files/1/0450/9509/2376/files/formwork_for_concrete_7th_edition.pdf
    • https://cdn.shopify.com/s/files/1/0431/0263/4148/files/vemativalufasig.pdf
    • https://cdn.shopify.com/s/files/1/0440/6453/8776/files/easy_money_movie.pdf
    • https://cdn.shopify.com/s/files/1/0448/4068/1633/files/binary_search_tree_c_code.pdf
    • https://cdn.shopify.com/s/files/1/0450/6664/9750/files/angiotensin_ii_for_the_treatment_of_vasodilatory_shock.pdf
    • https://cdn.shopify.com/s/files/1/0440/5841/1158/files/56135748443.pdf
    • https://cdn.shopify.com/s/files/1/0436/0683/5358/files/contemporary_abstract_algebra.pdf
    • https://cdn.shopify.com/s/files/1/0427/8275/2935/files/visual_studio_2010_shell.pdf
    • https://cdn.shopify.com/s/files/1/0429/9010/8833/files/wototosurenaj.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_off00005a22.bin
7fe059ab5068516339d24c0c6dcb08ed5d45264db86bccaca5153b9b67e20c7b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5A22 5804 bytes
font_01_sfnt_off00006dc7.bin
01f63fab13299cbc4fffe639c440a645e5a12db001c43a7fa417d7c0f71960fa		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6DC7 14672 bytes

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