Malicious PDF — malware analysis report

Static analysis result for SHA-256 9ebc41da8e03a7d9…

MALICIOUS

PDF

53.9 KB Created: 2020-08-09 23:20:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f46cee36cd63e4688d8eba520ad74d26 SHA-1: fabf6a31316aae85925386fc39bef258c732eb98 SHA-256: 9ebc41da8e03a7d900509aba5a6202b662588f45b57e38b4772933bf172a666a
152 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, with one identified as a malicious redirector. The ML classifier also strongly indicated maliciousness. The document body, though heavily obfuscated, contains the malicious redirector URL, suggesting the primary purpose is to lure users to malicious sites. No scripts were extracted from this sample.

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=beguine+for+band+pdf
    • http://suxulosi.jamesekdahl.com/uploads/1/3/1/1/131164250/xagagojagivukubiwaj.pdf
    • http://files.ourconsciousconnection.com/uploads/1/3/0/9/130969986/f31b450546.pdf
    • http://files.belfastsashwindows.com/uploads/1/3/2/6/132681026/najanutijidubodofiji.pdf
    • http://xivivu.eficusenergy.com/uploads/1/3/1/6/131636725/2614799.pdf
    • http://somege.soundwavescape.com/uploads/1/3/1/4/131453574/6829472.pdf
    • https://cdn.shopify.com/s/files/1/0428/1974/7999/files/carboprost_davis_drug.pdf
    • https://cdn.shopify.com/s/files/1/0438/3929/1554/files/21795113884.pdf
    • https://cdn.shopify.com/s/files/1/0429/9803/8679/files/44357451056.pdf
    • https://cdn.shopify.com/s/files/1/0438/0105/1293/files/jaxupunifipumozivazer.pdf
    • https://cdn.shopify.com/s/files/1/0433/4839/4142/files/89912548505.pdf
    • https://cdn.shopify.com/s/files/1/0429/8883/0873/files/83034086662.pdf
    • https://cdn.shopify.com/s/files/1/0428/3600/0931/files/67005015150.pdf
    • https://cdn.shopify.com/s/files/1/0428/8364/5599/files/kikisagataxedik.pdf
    • https://cdn.shopify.com/s/files/1/0430/9755/5108/files/32988796347.pdf
    • https://cdn.shopify.com/s/files/1/0429/0802/4985/files/norurajikajijarejew.pdf
    • https://cdn.shopify.com/s/files/1/0431/5388/3293/files/80051549542.pdf
    • https://cdn.shopify.com/s/files/1/0434/6806/2872/files/automobile_engineering_books_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0437/3993/8970/files/jaragoxijapugaxonanunegut.pdf
    • https://cdn.shopify.com/s/files/1/0433/9807/0426/files/wemamukoxixer.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_off00008abf.bin
a4dee39f6ae08ba45152812145527d0dc2edd01543e4fdff7444af3679d38c58		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8ABF 5188 bytes
font_01_sfnt_off00009c79.bin
5733a95a2ae2b0bb4b6ac3ea5b2e451501cd603f36b9793cafff151235a9aaf5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9C79 14644 bytes

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