Malicious PDF — malware analysis report

Static analysis result for SHA-256 01aa880610f4199b…

MALICIOUS

PDF

49.1 KB Created: 2020-08-07 17:46:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c47938492d77636584dd6a48d37cb8c4 SHA-1: 37edcae29f5a075c721835067b060b161662a1a7 SHA-256: 01aa880610f4199b9642f85f64957ab69fcbaa09deb4760e9fb65d8740b8a232
154 Risk Score

Malware Insights

MITRE ATT&CK
T1059.007 JavaScript T1203 Exploitation for Client Execution

The PDF contains numerous embedded links, with one specifically pointing to a known malicious redirector. The ML classifier strongly indicated maliciousness, and the presence of a link farm suggests an attempt to manipulate search engine results or distribute spam. While no scripts were directly extracted, the PDF structure and embedded links are indicative of a malicious redirection or spam campaign.

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.com/pify?keyword=creative+writing+topics+for+grade+8+pdf
    • http://files.glassbynanc.com/uploads/1/3/2/3/132302732/2163071.pdf
    • http://files.missjordansclassroom.com/uploads/1/3/0/7/130776841/5406440.pdf
    • http://files.samvohra.com/uploads/1/3/1/3/131380158/felujugetosig_tepav_nunuteme.pdf
    • http://files.westcoastwhitening.com/uploads/1/3/0/8/130813301/pegapititek.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0440/3698/0886/files/93413414720.pdf
    • https://cdn.shopify.com/s/files/1/0430/4211/1650/files/18699121927.pdf
    • https://cdn.shopify.com/s/files/1/0433/4374/1083/files/savirufikememijumez.pdf
    • https://cdn.shopify.com/s/files/1/0429/7791/9129/files/62311438531.pdf
    • https://cdn.shopify.com/s/files/1/0430/7802/5377/files/combine_and_split_files_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0431/2888/1313/files/wixogujemupis.pdf
    • https://cdn.shopify.com/s/files/1/0432/2315/4847/files/65816874599.pdf
    • https://cdn.shopify.com/s/files/1/0431/3304/2839/files/13809483747.pdf
    • https://cdn.shopify.com/s/files/1/0431/9897/2066/files/68616977957.pdf
    • https://cdn.shopify.com/s/files/1/0430/8706/9335/files/butujimuwuxoxejo.pdf
    • https://cdn.shopify.com/s/files/1/0434/6799/7344/files/xitusosul.pdf
    • https://cdn.shopify.com/s/files/1/0437/2388/2664/files/wojapakidesazej.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/parisibudipaxetiwori.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_off00008000.bin
f2ed8414b5a4f48472dabbead9f4b52684d281ee391ecb7b2d1216ba37f2267a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8000 5544 bytes
font_01_sfnt_off000092fe.bin
a76b3ebcc070f098e3ddb26fef676f20707c236273b2867e37feac4db9aa14db		 pdf-font-stream PDF embedded font (sfnt) at offset 0x92FE 11068 bytes

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